意思:
n. 钥匙；（钢琴等的）键；密钥；关键；（音乐）调；（无花果树的）翼果；板条间首层灰泥；（篮球的）罚球区；（加勒比海地区的）礁（key 的复数）
v. 键入；调整……的调子；用钥匙划坏（汽车）（key 的第三人称单数）
Chris has unfortunately left his keys at home.
Chris不巧把钥匙落在家里了。
I noticed that my keys weren't in my pocket when I got to my front door.
走到前门时，我注意到我的钥匙不在口袋里。
My keys are missing! Maybe I left them at home.
我的钥匙不见了！也许被我落在家里了。
As soon as the hotel door closed, I realized that I had left my keys inside.
酒店房间的门一关上，我就意识到我把钥匙落在里面了。
It suddenly occurred to me that I had left my keys at home.
我突然想起我把钥匙落在家里了。
