It would be a good idea to call before we leave.

　　我們出發(fā)之前打個電話是個好主意。

　　I'd like to take this idea a step further.

　　我想把這一思想深化一步。

　　A coral reef is built by the accretion of tiny, identical organisms.

　　珊瑚礁是由許多相同的微生物不斷堆積而成。

　　This is the identical room we stayed in last year.

　　這就是我們去年住的那個房間。

　　The two pictures are similar, although not identical.

　　這兩幅畫很相似，雖然不完全相同。