1. The essence of language is communication.
    语言的本质是沟通。

2. A new arrival on the anti-wrinkle front claims to be a more natural way to avoid those terrible lines.
    抗皱行列的一个新产品声称可以用一种更自然的方法来避免讨厌的皱纹。

3. Many owners of private cars are going to offer ´free rides´ to people on their way to work.
    很多私人汽车的车主正准备为乘车上班的人们提供"免费乘车"的服务，

4. It ´flies´, therefore, but it cannot fly higher----its action depends on the surface, water or ground, over which it rides.
    这样，船就能飞了，但飞不高。它的飞行限决于它所悬浮的水面或地面。