1.on the other hand 从另一方面来说;在另一方面
On the other hand, the idea appealed to him.
从另一方面来说,这个想法又使他很感兴趣
2.happen to 碰巧;偶然
If you happen to talk to him, have him call me.
如果你碰巧能和他说话,让他给我打个电话
3.such as 像这种的;像……那样的
Trees such as spruce, pine and oak have been planted.
种植了云杉、松树和橡树等树木