1.on the other hand 從另一方面來說;在另一方面
On the other hand, the idea appealed to him.
從另一方面來說,這個想法又使他很感興趣
2.happen to 碰巧;偶然
If you happen to talk to him, have him call me.
如果你碰巧能和他說話,讓他給我打個電話
3.such as 像這種的;像……那樣的
Trees such as spruce, pine and oak have been planted.
種植了云杉、松樹和橡樹等樹木