Plastic bags cause the deaths of 100,000 marine animals each year because the animals mistake them for food. So if you must use them, always recycle them.

塑料袋每年会导致10万只海洋动物死亡，因为这些动物误以为它们是食物。所以如果你必须使用它们，一定要回收它们。

youdao

One of the ground rules of the swap should be that everyone must try on the clothes before they take them—things always look different when you put them on.

交换的基本规则之一应该是，每个人在拿衣服之前都必须试穿——当你穿上它们的时候，它们总会看起来不一样。

youdao

To resolve this, once you create a temporary file atomically, you must always use the file descriptor or file stream you got when you opened the file.

解决这种问题的方法是，一旦自动创建了一个临时文件，就必须始终使用打开该文件时得到的文件描述符或文件流。

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"You must always remember," one said, "that the president is about six years old."

VOA: special.2010.08.12

You must always face the curtain with a bow.

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There are four primary characters you must always identify in the meeting: the leaders, the lifters, the loafers and the leeches.

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"The problem with talking about the economic future of Iraq is that you must always make a political assumption about the country, " says economics Professor Edith Penrose of France's Institut Europeen d'Administration des Affaires, one of Europ's ranking Iraq scholars.

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