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

　　我們出發(fā)之前打個(gè)電話是個(gè)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?nèi)ツ曜〉哪莻�(gè)房間。

　　The two pictures are similar, although not identical.

　　這兩幅畫(huà)很相似，雖然不完全相同。