例句：
He spewed up on the pavement.
他在人行道上吐了。
I looked it up on the Internet.
我在互联网上查过此事。
Sales are well up on last year.
销量比去年大幅增加。
He continued working up until his death.
他一直工作到去世。
I often stayed up until two or three in the morning.
我经常熬夜到凌晨两三点钟。
Don't give up until you have exhausted all the possibilities.
只要还有可能就别放弃。
Phone them up and find out when they are coming.
给他们打个电话，问问他们什么时候来。
Let us, then, be up and doing.
那么，让我们起来干吧。
Lett us, then, be up and doing.
让我们起来干吧。
