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。