It would be a good idea to call before we leave.
我们出发之前打个电话是个好主意。
I'd like to take this idea a step further.
我想把这一思想深化一步。
A coral reef is built by the accretion of tiny, identical organisms.
珊瑚礁是由许多相同的微生物不断堆积而成。
This is the identical room we stayed in last year.
这就是我们去年住的那个房间。
The two pictures are similar, although not identical.
这两幅画很相似，虽然不完全相同。