Scientific work is differentiated from art by its necessary connection with the idea of progress.

科学工作不同于艺术在于它与进步的概念有必然联系。

《柯林斯英汉双解大词典》

Yes. Then its necessary to learn about the cultures in other countries.

是的。那么有必要。学习一下其他国家的文化。

youdao

If so, those who maintain the space bridge energy help completely unable to stabilize its necessary array system.

如果是这样，那些保持空间的桥梁能源帮助完全无法稳定其必要的阵列系统。

youdao

He used strong language and seemed to say that the United States would fight, if necessary,to defend its claim.

VOA: special.2009.02.19

Fate will permit no apocalypse before its time, before the necessary and painful steps that have to lead up to the Last Judgment.

命运在来之前不会允许人们去启示别人，必须要自己去经历必要而又痛苦的那几步,才能走向最终的审判。

耶鲁公开课 - 弥尔顿课程节选

In order to complete the founding of the city, it was necessary to establish its gods and ensure proper respect for the law. Numa was the bringer of the Roman legal codes respecting religion, proper observances and the like.

为了完成重建城市的任务，建立起它的众神体制并且保证人们对于法律的,恰当尊重是必要的，Numa是为罗马带来,法典的人，这种法典崇尚宗教，适宜的规范，诸如此类。

耶鲁公开课 - 政治哲学导论课程节选

And, with that, the Enlightenment will have reached its necessary end.

CENTERFORSECURITYPOLICY: David Yerushalmi on the Geert Wilders Trial

Although "apartheid" is now a familiar term in much of the world, a few brief details of its history seem necessary to explain its grotesque impact on the life of Ruth Khumalo as well as on her children and their children, including the boy.

NPR: One Boy's Heroism in the Face of AIDS

So, for the recovery to take hold its not necessary that workers salaries go up or even that an increasing fraction of national income go to workers.

FORBES: Prices Clear Markets: Manufacturing Edition