1. You'll save time not waiting for the elevator.

　　你可以节省等电梯的时间。

　　2. A clear conscience laughs at false accusation.

　　只要问心无愧，无端的指责可以一笑置之。

　　3. I cannot express how glad I am to hear from him.

　　我无法表达我接到他的信时有多高兴。

　　4. If Tom cannot keep his promise, he'll lose face.

　　如果汤姆不能信守诺言，他就会丢面子。

　　5. We are prohibited from smoking on school grounds.

　　我们被禁止在校园内抽烟。

　　6. Growth, however, brings new problems and concerns.

　　不过，发展也带来了新的问题和顾虑。

　　7. The brothers differ from each other in their interests.

　　这几个兄弟各有所好。

　　8. Although we can't see these atoms, they really do exist.

　　虽然我们看不见原子，但它们的确存在。

　　9. It's very kind of you to help me.

　　你帮助我真是太好了。

　　10. We're planning a tour to Italy this summer.

　　我们计划今年夏天到意大利去旅行。