When Ted was six we decided that he needed to know how to fasten and unfasten his seat belt.

泰德六岁时，我们决定让他知道怎样系和解他的安全带。

《柯林斯英汉双解大词典》

One day before the plane took off, the stewardess approached Sam and asked him to fasten his seat belt.

某天飞机起飞前，空姐走到山姆面前要求他系好安全带。

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Our plane is about to take off, please fasten your seat belt.

我们的班机马上要起飞了，请系好安全带。

youdao

And always adjust the seat and mirrors, fasten your seat belt, tune the radio in to your favorite station and enter a navigation destination before you shift the transmission into drive.

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