Half of the apples are unripe.一半的苹果不熟.I was only ill once and that came of eating an unripe pear.我唯一一次生病是因为吃了未熟的梨。Ripe fruit does not travel well, but unripe fruit can be transported worldwide.熟透的水果不宜长途运输，但未成熟的水果却可以运往全世界...
The slope increases as you go up the curve.上了弯道以后，路越来越陡。He believes food prices will go up in the future.他认为食品价格将来会上涨。"Go up to your room. Now," he ordered him.“上楼回你的房间去。现在就去！”他命令他道。...