光是对他大喊大叫不会有多大用处。
他不光是肥胖，而且肌肉松弛。
氯化钠晶体对可见光是透明。
光是向每个方向传播的吗？
光是这个词和这个想法，就值五十条毯子。
直到最近，科学家们还认为光是必不可少的。
Until recently, scientists thought that light was essential.
你可能想知道光是否也是生命形成所必需的条件。
有一些房间，光是墙纸就花了四万英镑。这太疯狂了。
In some rooms, the wallpaper alone costs 40 thousand pounds. It's crazy.
在美国，这需要两年的时间，光是学费就至少要花费5万美元。
It'd take 2 years, and cost at least 50,000 dollars in tuition alone.
我相信，你们在物理课上都学过光是如何以微观的方式运动的，以及只有在光的波长在特定的范围内时我们才能看到光这一事实。
I am sure you all know from physics class about how light moves in microscopic ways and that we can only see light when the wavelength of that light is in a specific range.
在户外消磨晚间时光是夏天的乐事之一。
光是坐在椅子上，她就费了很大的劲。
让我们看看这奇怪的光是什么。
他发现白光是由很多颜色组成的。
光是讲我们党的历史，可能就有点乏味了。
每天享受一小时左右的阳光是有益的。
It is OK to enjoy some sunlight for about an hour every day.
我认为我们一起上网下棋的时光是如此美好，我们永远不会忘记。
I believe the time when we played online chess together was so great that both of us will never forget.
面对病毒变异，不光是中国，其他国家也必须采取行动对抗这次危机。
In the face of the variation of the virus, not only China but also other countries have to take action to fight against the crisis.
盲人不知道昼夜，不能欣赏自然之美，甚至不知道光是什么。
A blind man has no idea of day and night, can't enjoy the beauty of nature, or even doesn't know what the light is.
在其中一个房间里，你还可以有机会了解 X 光是如何让你看到身体内部的。
In one of its rooms, you can also have a chance to know how X-rays let you see inside your body.
一方面，海滩和阳光是很多游客的选择。
On the one hand, beaches and sunshine are a lot of travelers' choices.
他向其他乘客投来的目光是躲躲闪闪的，羞涩的。
The glances he devoted to other passengers were furtive and shy.
这一丛纸桦树树干的背光是一片红黄相间的火焰。
This clump of paper birch trunks was backlit by a blaze of reds and yellows.
对张先生来说，光是环保上的节约就足以证明这份努力。
For Mr. Zhang, the environmental savings alone justify the effort.
我上高中的时候，光是我班上的几十个学生就会有不同的回答。
When I was in high school, dozens in my class alone would have answered differently.
光是艺术家和科学家都感兴趣的东西，因此可以形成合作的基础。
Light was a something that both artists and scientists had an interest in, and therefore could form the basis of collaboration.
当你想知道某物对可见光是否透明时，这里是神秘物质，这里是可见光。
When you want to know if something is transparent to visible light or not, here is the mystery material and here is visible light.
如果光是确定团队成员就这么困难，使成员达成一致意见的目标就更难了。
If it is hard enough to define a team's membership, agreeing on its purpose is harder still.
我记得我第一次曝光是在60年代，那是一张尼日利亚内战期间比夫拉饥荒的照片。
I remember my first exposure way back in the 60s was a photo of the Biafra famine in the civil war in Nigeria.
近几年来，正式参赛选手有近5000人，光是运动员们跑过起跑线就需要整整3分钟。
In recent years there have been nearly 5,000 official competitors and it takes three whole minutes for the crowd of runners just to cross the starting line.
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