ADM-201 dump PMP dumps pdf SSCP exam materials CBAP exam sample questions

你应该选择什么样的防晒霜? – 译学馆
未登录,请登录后再发表信息
最新评论 (0)
播放视频

你应该选择什么样的防晒霜?

Which sunscreen should you choose? - Mary Poffenroth

防晒霜有各种形式的
Sunscreen comes in many forms,
每一种对于你的身体和大环境都有着不同的影响
each with its own impacts on your body and the environment.
有这么多的选择
With so many options,
你应该如何选择最适合你的防晒霜呢?
how do you choose which sunscreen is best for you?
为了解答这个问题
To answer that question,
我们首先需要知道防晒霜是如何起到它的作用的
we first have to understand how sunscreens work.
太阳光是由电磁波组成的
Sunlight is composed of electromagnetic waves
也是我们接收到的紫外线的主要来源
and is our primary source of ultraviolet radiation,
它有相较可见光更短的波长也带有更多的能量
which has a shorter wavelength than visible light and carries more energy.
a波紫外线
UVA,
b波紫外线
UVB,
和c波紫外线是由它们的波长来区分的
and UVC are classified according to their wavelengths.
短波长的c波紫外线到不了地球表面
Short wavelength UVC never reaches the Earth’s surface,
但是a波和b波紫外线可以到达
but UVB and UVA do.
中等波长的b波紫外线可以进到皮肤的表层
Medium wavelength UVB rays can enter the skin’s superficial layers
而长波长的a波紫外线则可进入皮肤的深层
and long length UVA rays can penetrate into the deeper layers.
少量的b波紫外线可以帮助人体产生维他命D
UVB in small amounts actually helps us make vitamin D,
它能让我们的身体保持强壮的骨骼然而
which enables our bodies to build and maintain strong bones.
过长的暴露在a波和b波紫外线下会损坏DNA
However, prolonged exposure to UVA and UVB can damage DNA,
并使皮肤衰老
age your skin,
还会增加得致命性皮肤癌的可能
and promote the development of potentially deadly skin cancer.
防晒霜保护皮肤一是以物理护肤的方式偏转紫外线
Sunscreen protects your skin either physically by deflecting UV rays
运用的是一种无机的阻隔物例如二氧化锌或二氧化钛
with an inorganic blocker like zinc oxide or titanium dioxide,
二是通过化学方式用碳化物类吸收紫外线中的光子
or chemically by using carbon-based compounds to absorb UV photons
使它们以热的形式消散那么
that are then harmlessly dissipated as heat.
是什么区分一种防晒霜于另一个?
So, what differentiates one sunscreen from another?
当我们选择防晒霜时
When we choose a sunscreen,
我们可以比较它们的使用方法
we can compare application method,
比较SPF
the SPF,
和其他的成分
and the active ingredients.
防晒喷雾使用起来很方便尤其在你的肌肤是湿润的时候然而
Sprays can be convenient to put on, especially when you’re wet,
最近的一个研究发现大多数人并不会喷上足够
but a recent study found that most people don’t apply a thick enough layer
保护皮肤的量而且
to get full protection.
也存在不小心吸入防晒喷雾而产生的
And the possible health risks of inhaling sunscreen compounds from a spray cloud
健康隐患这也许使你想去换用那瓶防晒乳液
might make you consider reaching for that bottle of lotion instead.
选择至少有SPF15的防晒产品当然SPF30的会更好
Opt for a sunscreen with an SPF of at least 15, although 30 is better.
SPF是一种非线性的比例关于的是造成晒伤的
SPF is a nonlinear scale of how much UVB radiation is needed
b波紫外线的量
to give protected skin a sunburn.
SPF15的防晒可以阻挡93%的b波紫外线
SPF 15 does a pretty good job by blocking 93% of UVB rays.
SPF值的升高 它的阻挡力也会稍许增加
You get a slight increase as SPF goes up,
SPF30可以阻挡97%
with SPF 30 blocking 97%,
而SPF50则可以阻挡98%
and 50 blocking 98%.
SPF值根据的是太阳曝光的量
SPF is based on the quantity of solar exposure.
所以你是否容易被晒伤
So how much time you have before you start to burn
有很多的因素
really depends on a long list of factors,
包括你的基因
including your genetics,
你在哪里 多长时间 如何晒太阳的
and when, where, and how you spend your time in the sun.
虽然美国认证的防晒霜被美国食品药品监督管理局认可为安全的
Even though US marketed sunscreens have been deemed safe by the FDA,
科学家仍旧在继续研究
scientists are still researching the effects of many active ingredients
许多成分对人体会产生的影响
on the human body.
所以如果你担心潜在的刺激
So if you’re worried about potential irritants,
可以选用矿物配方以及有二氧化锌或二氧化钛的
look for mineral-based formulas with zinc oxide or titanium dioxide.
防晒产品它们一开始可能会有一些厚
Even though they may go on a bit thick at first,
但是它们相对于碳配方的防晒霜对皮肤少刺激
they’re less irritating than carbon-based chemical sunscreens.
矿物配方的防晒产品对环境也有保护
These mineral-based sunscreens are preferential for the environment, too.
如果你想要在沐浴着阳光又想在河或者海洋中戏水要记住
If you plan on catching rays while splashing in a river or the ocean,
碳配方的化学防晒霜
keep in mind that carbon-based chemical sunscreens
对海洋生物有害
can harm marine life.
就拿珊瑚礁来说
Take coral reefs, for example.
虽然它们只覆盖了百分之一的地球水下面积
Although they cover less than 1% of the Earth’s underwater surface,
但是它们是百分之二十五的鱼类的家园
they’re home to nearly 25% of all fish species,
让它们成为了最多样的和生产力最强的海洋生态系统
making them the most diverse and productive marine ecosystems.
研究显示碳配方的化学防晒中的一些物质
Research shows that carbon-based chemical sunscreen ingredients,
例如说氧苯酮 尼泊金丁酯 桂皮酸钠和4MBC
like oxybenzone, butylparaben, octinoxate, and 4MBC
会给海洋带来很不好的影响比如说珊瑚漂白
contribute to a stress condition called coral bleaching in corals,
而它们都是有生命的生物
which are living creatures.
当珊瑚暴露在这些有机化合物前
Exposure to these organic compounds
会导致珊瑚的共生藻的死亡
results in the death of the coral’s symbiotic algae.
这些共生藻除了提供食物源
In addition to providing a reliable food source,
它们还带给珊瑚彩虹般绚烂的色彩
these algae give coral their brilliant rainbow of colors.
没有了它们 珊瑚就像被漂白过一样
Without them, corals turn a bleached white
而且很容易会有疾病 和死亡的可能性
and are susceptible to disease and possibly death.
一旦珊瑚死去后
And once the coral dies,
整个珊瑚礁生态系统都将会崩溃
the entire reef ecosystem is not far behind.
你现在一定可以在选防晒霜时做出有所依据的选择
So you’re now ready to make an informed choice when picking out your next sunscreen.
SPF值在防晒产品上都会清楚地标明
SPF is clearly labeled on the front.
在背后的“成分表”中
On the back under “active ingredients,”
你可以发现防晒产品是否含有二氧化锌
you can find whether zinc oxide,
二氧化钛
titanium dioxide,
或是对珊瑚有害的成分
and those coral-harming components are present.
花稍微多一点的时间来做出
Taking a bit more time to check can be well worth it
一个对你 对环境都好的选择
for both you and the environment.

发表评论

译制信息
视频概述
听录译者

收集自网络

翻译译者

收集自网络

审核员

自动通过审核

视频来源

https://www.youtube.com/watch?v=JX8rv_natkw

相关推荐