1.feed on 以......為食;以......為主食
The caterpillars feed on a wide range of trees, shrubs and plants.
毛蟲(chóng)以各類樹(shù)木、灌木和植物為食
。2.on top of 在......上面;在......之上
The park lies on top of a coalfield.
公園位于一片煤田上.
3.decide to 決定去做;決定要
If the Conservatives got in they might decide to change it.
如果保守黨贏得選舉,他們可能會(huì)決定改變這一現(xiàn)狀
。4.be lined with 排列;排列著
The walls would be lined with books and periodicals.
這幾面墻會(huì)擺放書(shū)籍和期刊.