As amusing bit of copy would circulate until no one could be sure of its origin.

Can I be sure of a profit if I invest?

我要是投资,肯定能获利 吗 ?

Perhaps we can be sure of the facts before they arrive.

在他们到来以前,也许我们可以把情况弄弄清楚.

A lot of people think that it's better to pay for their education so that they can be sure of getting quality.

许多人认为最好是接受付费教育，这样能确保教学质量。

She looked over her shoulder to be sure of her footing.

她扭头看了看后面以确认自已是否站稳了.

Be sure to make him believe it.

务使他相信此事.

If you ever cometo Dalian, be sure to let us know.

(任何时候)你若到大连来, 务请通知我们一声.

Be sure to make it clear and concise and avoid long-windedness.

注意简明扼要,反对长篇大论.

Be sure to write and give me all the news.

务必写信告诉我所有的消息.

Be sure to do the sowing in good time.

确保适时播种.

Be sure to remind her to come back early.

一定要提醒她早点回来.

Be sure to dig the whole garden over before winter.

在冬季来临前要把园子好好地翻一下.

Get up steam, and you will be sure to succeed.

加把劲, 你一定会成功的.

Be sure to select firm, unblemished fruit.

一定要选坚实、无疤痕的果子。

Be sure to read about how mozzarella is made, on page 65.

务必看看莫泽雷勒干酪是怎么制成的，在第65页。

If she lasts a couple of hours, I shall be surprised.

她要是能拖上两个小时, 我将非常吃惊.

Years hence I shouldn't be surprised if I have trouble with her.

多年以后,如果跟她处得不好,我也不奇怪.

And won't he be surprised after supper when everybody troops in! "

那么,吃完晚饭后看见那么多人涌进门来,他不给吓坏才怪呢!

Don't be surprised if all these cigarettes you are smoking catch up on you one day.

如果你现在抽的这些香烟哪一天损害到你的健康,你可别大吃一惊.

Nobody should be surprised by this. It's been in the works for some time.

不应该有人对此感到惊奇，这事已经张罗了有一阵子了。

You will be surprised there is so much infelicity in the world.

你会感到惊讶世界上竟有这么多不幸的事情.