The library had a spare but efficient look about it.

这个图书馆种简单，但却很有效的感觉。

Antibiotics is effective to cure throat infection.

抗生素对治疗咽喉部感染是很有效的。

Silicify or silicified rock is one more efficacious sign for exploring mine in Xikuangshan antimony deposit.

硅化/硅化岩石是锡矿山锑矿的种很有效的找矿标志。

This has proved an effective preventive.

这种证明是很有效的预防剂。

The animal’s markings provide effective camouflage.

这种动物身上的斑纹是很有效的伪装。

Of yore we had sauntered and talked, and effectually put the world behind us;for he was pledged to no institution in it, freeborn, ingenuus.

从前我们散步，我们谈天，很有效地把我们的世界遗弃在后边了，不属于这世界的任何制度，生来自由，异常智巧。