有用的

There isn’t a bottomless pit of money for public spending.

并非有之不尽钱于公共开支。

On display are earrings, necklaces and bracelets made from jade, amber and amethyst.

展有玉石、琥珀和紫水晶做耳环、项链和手镯。

These are useful in hard rock mining where high brisance, high shattering effects, are desired.

这种炸药，对需要高威力、高破碎效应坚硬岩石矿，是有。

There is a useful bibliography at the end of each chapter.

在每一章后附有一份有参考书目。

An unerring faculty for detecting hypocrisy is one of her most useful attributes.

能无误地看伪善能力是她身上最有特征之一。

The minister has piloted several useful bills through Parliament.

这位部长设法使几项有法案得以在国会通过。

Designing colleagues stopped them from promoting me.

有些别有心同事阻止他们提拔我。

He dished up a lot of useful facts and figures.

他拿了许多有事实和数据。

The computer is ever such a useful tool.

计算机是一种非常有工具。

The proposed troop reductions were a useful bargaining counter in the disarmament talks.

裁减兵员提议是这次裁军谈判中一个有讨价还价筹码。

Chemicals in the body break our food down into useful substances.

人体中化学元素把食物分解成有物质。

As a novelist, I feel that any experience, good or bad, is grist to my mill.

作为一个小说家，我觉得任何经历，无论好坏，对我来说都是有。

The horse is a useful animal.

马是有动物。

The cow is a useful animal.

奶牛是有动物。

This book is a useful guide to the do’s and don’ts of choosing and buying your first car.

这本书告诉你买第一辆车时有注意事项。

Nevertheless, the flight was a success, and, just as Joseph Montgolfier had envisioned, balloons became useful for military purposes.

然而，试验飞行是成功，而且，正如约瑟夫菲尔设想，气球成为有于军事目。

He mentioned a useful book.

他说一本有书名字。

Shoemaking is a useful trade.

做鞋是一种有手艺。

It's a most useful invention.

这是一项极其有发明。

That is a useful knife.

那是把有小刀。