couldaux.可以；能；可能；can的过去式couldn't help laughing.人为故障Could he buy the car?人为污染could order it for you.我们目前没有货，不过我们可以为您订购。Could you come later?人造宇宙飞船couldnot hold a candle tovt.比不上Could you replace it?人造金刚石Could I take it away?人工同位素Could anyone tell me?人为污染物Could not rename buddy.不能重命名好友。Could you turn it up?adj.半合成的

1. A baby's cry can be expressive of hunger or pain.
   婴儿的啼哭可能是表示饥饿或疼痛。
2. In all probability the money will not be paid.
   这笔钱很可能是不会偿付的。