例句：
The railway slopes up slightly at this point.
鐵路從這里開始有個微微向上的坡度。
Put your hand up if you need more paper.
若有人還要紙，請舉手。
Teachers are up against some major problems these days.
老師們最近面臨著一些重大問題。
Make sure that sign's the right way up.
一定不要把這招牌掛顛倒了。
Put your hand up if you know the answer.
知道答案就舉手。