必须的

And better monitoring and control of rail fleets are necessary.

和对火车车辆的监控加强是必须的。

To better human life, enlightenment is needed, but to redress 矫正 it is very hard.

为了更好的生活，启蒙是必须的，但是很难纠正。

MECA's first analysis indicated that the Martian regolith contained several soluble minerals necessary for life, including potassium, magnesium and chloride.

MECA首次分析显示，火星土壤含有几种生命必须的包括钙、镁和氯化物在内的可溶性矿物质。

Therefore, relative stability of three different structures is investigated here.

因此，调查三个不同相间的相对稳定性是必须的。

As humans attune to this dream, there will be more direction on the part of Marine Scientists to restock the oceans of life necessary for all to subsist.

当人类接通到这个梦想，海洋科学家将得到给海洋重注生命的更多引导，那是让所有人维生所必须的。

However, a stringent programme of fiscal retrenchment will also be necessary.

然而严格的财政缩减项目是必须的。

A firm rootedness in the physical world is essential.

一个强壮的身体是必须的。

The economy's been so rough, it's kind of important.

经济状况不容乐观，这样的一部大片是必须的。

He is no angel; he will fight his corner with all the ruthlessness necessary to achieve his goals.

他不是天使，在争夺弯角时，他会使用所有必须的无情的方式去达到目标。

The measures must be approved by the House and the Senate and signed into law by the president.

这些措施必须的到众议院和参议院的批准，并由总统签署成法律。

This paper discusses design and realizable methods of remote test output interface from logical design angle.

本文从逻辑设计的角度讨论遥测输出接口的设计及实现方法。

This also 星体投射plies to buildings, structures and geological features.

这也适用于建筑物和地质特征。