If sharks bite you, says Doctor Clark, the reason is usually because of mistaking you for its natural food.

克拉克博士说，如果鲨鱼咬了你，原因通常是因为把你错认为它的天然食物。

youdao

You knew when it was "milk time" because you could hear the crate rattling with its load of tiny bottles.

你知道什么时候是“牛奶时间”，因为你能听到板条箱里装着的小瓶子叮当作响。

youdao

Then you take that bundle of fibers and you twist it a little bit, because by twisting it, you increase its breaking strength even more.

然后你拿起那束纤维并稍微扭一下它，因为这样做可以进一步增加它的断裂强度。

youdao

Because just the knowledge that what you are doing isn't in vain, because its being noticed,"

VOA: standard.2009.07.25

The reason it looks like a tautology, because you look around, nothing seems to have its velocity forever.

其原因听起来像是绕圈子,因为你看看四周,似乎一切都不可能永远运动下去

耶鲁公开课 - 基础物理课程节选

In the famous battle of Marathon, which I will tell you about when we get there, one of its features is that because the Greeks were numerically badly inferior to the Persians, they had this problem of covering the line.

比如在著名的马拉松战役,迟些我们会讲到,马拉松战役中,希腊军队,在人数上远不敌波斯军队,这为布阵造成很大的困难

耶鲁公开课 - 古希腊历史简介课程节选

"You can use the seed, you can plant it, but what you can't do is use its progeny unless you are licensed to, because its progeny is a new item, " she said.

CNN: STORY HIGHLIGHTS

There are certain scenarios, says Dr Lagace, where you might want to use a material because of its surface properties, but you might not want that property all the way through the material.

ECONOMIST: MONITOR

It seems to me as if you pick on China because you begrudge its rise.

ECONOMIST: The challenge of AIDS