It is necessary that we weigh the pros and cons of including English words in Chinese dictionaries.

权衡在汉语词典中加入英语单词的利弊，这对我们来说是很有必要的。

youdao

To compare the compositions of a meteorite and the Sun, it is necessary that we use ratios of elements rather than simply the abundances of atoms.

为了比较陨石和太阳的成分，我们需要利用元素的比率，而不单单是原子的丰度。

youdao

It is necessary that a critic develop a sensibility informed by familiarity with the history of art and aesthetic theory.

批评家必须在熟悉艺术史和美学理论的基础上培养一种感性。

youdao

Farmers know that it is necessary to make hay while the sun shines.

VOA: special.2010.01.31

And what we saw last time is that this was necessary to make things work, this part of it in particular.

上节课我们讲,这是对外做功的必要条件，特别是这个部分。

麻省理工公开课 - 热力学与动力学课程节选

We don't have an enormous difficulty grasping them, and it doesn't seem to me that our capability of grasping irony is founded on a necessary, underlying agreement.

我们在理解时不会用很大困难，而且我认为，我们理解讽刺的能力,是建立在必要的，潜在的共识之上的。

耶鲁公开课 - 文学理论导论课程节选

"It is necessary that the Kurdish people will go and vote, and give this day great attention, " he said.

CNN: Iraqi Kurds head to the polls

It is necessary that this right become a reality for the African people as it is in the west.

UNESCO: Natural Sciences

"It is necessary that we make the decision that we have in order to allow everyone to move forward, " he added.

BBC: Gavin Henson joins Saracens after Ospreys release