无须

Certain charities are exempt from VAT registration.

某些慈善机须进行增值税登记。

I did not have to invent any tales about my past.

我根本须为自己过去编造故事。

I'm not answerable to you for my every movement.

我须为每一个动作向你作出交代。

"Hypertext links create a Branching or network structure that permits direct, unmediated jumps to related information."

超文字连接创设了一种分支或网状,可以直接地、须中间步骤就得到有关信。

They work in the sealless magnetic drive pumps,which transporting volatile,flammable,explosive and toxic solutions with no leakage.

须直接机械联接，而是利用稀土永磁体之间相互作用，利用磁场可穿透一定空间距离和物质材料特性，进行机械能量传送。

The no staff and self-reducing tacheometer is a new type of surveying instrument designed and constructed by a group of teachers and students of our department.

须跑尺自计视距仪是一种新式测量仪器,经过研究,我们已初步试制成功。