You should fasten your seat belts before you start reading it, because the pace is quick and you could easily get off track!

你在读之前最好坐稳了，因为它的节奏很快，你一不小心就会跟不上。

youdao

Let us remind you to fasten your seat belts, straighten your seats, and kindly refrain from smoking during take-off.

在此提醒您系好安全带，椅背竖直，还有起飞这段时间请勿吸烟。

youdao

Ladies and gentlemen attention please, the plane about to land, go back to their seats, fasten your seat belts, turn off all radio-electronic equipment, thank you for your cooperation.

各位乘客请注意，飞机即将降落，请回到自己的座位上，系好安全带，请关闭一切无线电电子设备，谢谢你的配合。

youdao