Well, I don't imagine that will be necessary. Leastways, I hope not.

我想那是不必要的。至少，我希望不是。

《柯林斯英汉双解大词典》

It may be necessary to buy a new one.

也许有必要买个新的了。

《牛津词典》

Some adjustment of the lens may be necessary.

可能需要调整一下镜头。

《牛津词典》

He said southern defenses around the fort were so strong that a major military effort would be necessary.

VOA: special.2009.08.06

This material will be necessary to do the listening exercises for the course, which is sort of the backbone of the course.

做听力练习时我们必须使用这些材料,听力训练是课程的核心内容

耶鲁公开课 - 聆听音乐课程节选

For, as Rutherford has shown the assumption of the existence of nuclei, as those in question seems to be necessary in order to account for the results of the experiments on large angle scattering of the alpha rays.

因此卢瑟福,提出了原子核存在的假设，这些关于问题的假设对于,解释阿尔法粒子的,大角度散射是有必要的。

麻省理工公开课 - 固态化学导论课程节选

Developing repeatable processes and data governance will be necessary to create a sustainable information advantage.

FORBES: Why Business Leaders Must Master Data And Analytics

All of these reforms may be necessary, but they take time to have an impact.

BBC: European austerity: More pain than gain?

In short, tampering with a skeptical, scared jury in Moscow may not even be necessary.

FORBES: Magazine Article