必不可少

With a growing popularity and influence, Guangdong Shipbuilding Magazine attracts more and more subscribers who are engineers, technicians, experts, scholars, and professors of shipyards, ship repairers, fittings suppliers, ship owners, port operators, shipping corporations, dredging companies, marine engineering enterprises, colleges, designing companies and research institutes, etc.

随着《广东造船》杂志影响力的不断提高，越来越多的修船、造船、船舶配套、船东、港口、航运、疏浚、海洋工程企业及各大专院校、设计单位、科研机构的工程师、技术人员和专家、学者、教授都把《广东造船》杂志作为必不可少的阅读刊物，订阅量一度攀升，印量一度翻倍。

A lightweight, waterproof, breathable piece of rainwear could be indispensable.

一重量轻，防水，透气一块雨衣，可必不可少的。

Is this the same vital spirit that brought us insulin, eyelashes, and raccoons in the first place?

这就是那带给我们胰岛素、眼睫毛和浣熊的必不可少的精灵吗？

Is this the same vital spirit that brought us insulin, eyelashes, and raccoons in the first place?

这是起初带给我们胰岛素、眼睫毛和浣熊的必不可少的精灵吗？

HIV-1 integrase catalyzes the integration of proviral DNA into the genome of the host cell, an essential step for viral replication, thus inhibition of integrase catalytic activity represents a rational strategy for the treatment of HIV-1 infection.

HIV-1整合酶催化前病毒DNA整合进入宿主细胞基因组的过程是病毒复制必不可少的步骤，所以抑制HIV-1整合酶活性是治疗HIV-1感染的合理策略。

Proms are the rite of passage for most American teens.

对大多数美国青少年来说，高中毕业舞会是必不可少的。

IntelliSEAQ monitors, adjusts, and controls essential printhead functions.

IntelliSEAQ监测，调整，控制必不可少的打印功能。

With the added on trend detail of poppers to fasten, it has to be every woman's staple piece for the summer season.

这款外衣还拥有简易时髦的胸扣设计，是每个准妈妈夏日必不可少的时尚武器。

The propulsion shafting is one of the most essential parts of ship's powder system. The reliability and stabilization of the running propulsion shafting effects the vessel's operation directly.

船舶推进轴系是船舶动力装置中必不可少的重要部件，其运转的可靠性和稳定性直接影响到船舶的运行。

Regular monitoring during pregnancy is essential for conditions such as diabetes, high blood pressure and pre-eclampsia.

定期监测在怀孕期间是必不可少的条件，如糖尿病，血压高的压力和先兆子痫。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。