已经 [yǐ jīng]
already
Relative explainations:
have (got), had been, has been, yet
Examples:
我已经足够大了,有权去做我喜欢做的事。
I'm old enough to have the freedom to do as I like.
我已经在这个旅馆里预订了一个房间。
I have engaged a room at this hotel.
本世纪我们已经经历了两次世界大战。
We have had two world wars in this century
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