I heard the key turn in the front door and I was out of bed like a shot.

我听见钥匙开前门的声音，立刻从床上起来了。

《柯林斯英汉双解大词典》

He set this valise on a chair near his bed, and he always carried the key about his person.

他把提箱放在自己床边的一张椅子上，钥匙老揣在身上。

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Going to bed early is key to getting enough sleep and helping adolescents feel on top of the world, a new study reported.

一项最新研究报告称，早睡不仅是得到充足睡眠的关键，而且有助于改善青少年的情绪。

youdao

Education is key and with bed bugs you must understand their behavior to understand how to keep them away!

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"In coal bed technology, they kept at it until they found the key that unlocked the door and things started happening, which is likely the way methane hydrates will develop, " says Rose.

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