This is can be useful to test your array.

Plants provide many chemicals that can be useful to humans, especially for drugs and insecticides.

植物能为人类提供有用的化学物质, 特别是药物和杀虫剂.

It may still be useful to press the point home by working out a particular illustration.

通过一种特殊的说明来表明这点也许仍是有用的.

Before going further, it may be useful to get some perspective on the national debt.

在作进一步讨论前, 先观察一下国内负债情况可能是有用的.

It will be useful to summarize the relevant Gaussian formulae.

有必要概括地讲一下有关的高斯公式.

A test run would be useful to the statisticians.

试运转将对统计学家有用.

The drug will be useful to hundreds of thousands of infected people.

这种药将惠及成千上万的感染者。

Your advice might be useful to others in similar situations.

你的建议可能对处于类似情形的其他人有用.

It can be useful to write a short summary of your argument first.

先把你的论点纲要写下来可能会有帮助。

Once our services cease to be useful to them, we're expendable.

一旦我们的服务对他们不再有用，我们就可能被抛弃。

Goats also be valuable for their hair.

它们的毛发也很有价值.

It may be valuable for flying shears in design and theoretical analysis.

这无论是对于新飞剪机的设计,还是对现有飞剪机的分析计算,都具有实际意义.

Other things we desire and hold to be valuable for themselves alone.

其他我们渴望和认为有价值的东西就是它们本身.

Sharks also may someday be valuable for treatment of human diseases.

鲨鱼也可能在将来的某天能治疗人类的疾病.

Grow a farmer to be versed in both hands keeps giving pedestrian traffic shoeshine.

现象福州,街头闹市.一长排农民工双手不停地给过往行人擦皮鞋.

Be versed in electric components, circuit design, measurement and test.

精通电子元器件 、 电路设计 、 测量和测试.

Bugs that testers find won't always be viewed as severe enough to be fixed.

测试人员发现的bug不总是严重到需要去修复它.

Surely such a CEO would be viewed as incompetent and shown the door.

当然,这样的首席执行官被视作不称职,遭到了辞退.

If your actions and words contrast with one another, you will be viewed as insincere.

如果你言行不一, 别人就认为你虚假.

Nowadays, astronomical images can be viewed as digital form on your computer monitor so easily.

现在, 大部分的天文相片都可以轻而易举地在电脑的萤幕上看到.

Blood must be viewed as a scarce resource that carries risks and benefits.

因此我们必须把血液看作一种同时具有风险和利益的稀缺资源.