很有用

The book is valuable for my purpose.

这本书对我有。

The computer is useful in processing data.

电子计算机在处理资料方面有。

Her lectures are very useful, but they’re dry as dust.

她讲的课有，可是却乏味得要死。

A laptop would be really useful for when I’m working on the train.

我在火车上工作时, 便携式电脑真的有。

It pays to advertise.

登广告有。

The distinctives of Reformed theology and practice are useful only to the degree that they undergird and clarify the gospel, the evangel.

学与实践的特点是有的，但也只在一个程度上，即加强并澄清福音与福音要点。

For example, Digital's Lectrice file format included a pre-rendered bitmap representation of each page to allow for quick page turns, a prerequisite for the thumbing navigation metaphor.

要回忆起停止阅读或者阅读上一次引的地方，这种感受就变得有了。