usefulness

The report is of potential usefulness to the government.

这个报告可能对政府有用。

The index adds appreciably to the usefulness of the book.

索引明显地增加了这本书的实用价。

The theory is of limited usefulness.

这个理论用途有限。

the importance of a discovery as relative to its usefulness;

发现的重要性取决于用途；

Badly written questions limit the usefulness of questionnaires.

问题设计得不好，调查问卷的用途就会打折扣。

the organization had largely outlived its usefulness .

该组织在很大程度上已失去作用。

I was persuaded of the usefulness of his new device.

我相信了他的新装置的实用性。

Not only it can decide solely the lamp usefulness, but also available in mends light, sidelight, top light and the use of foot light.

它既可作主灯用，也可作为补、侧、顶、的使用。

The present study is the first to report on the usefulness of puromycin for production of enhanced green fluorescent protein (EGFP) transgenic piglets after somatic cell cloning and embryo transfer.

本研究是第一次报道在体细胞克隆胚胎移植后成功应用嘌呤霉素标记获得了转强化型绿色荧蛋白（EGFP）基因的小猪。