AI is also not a technology without tensions.

人工智能也不是一项没有压力的技术。

C. To provide a safe world without tension for students.

C. 为学生提供一个没有压力的安全世界。

A friend of mine took up book-binding because his doctor ordered him to do something that would give him relaxation and activity without tension.

我的一个朋友开始做装订书籍的活儿，因为他的医生要他去做点儿能使他放松且不让他紧张的活动。

In December, Nicole seemed well-knit again; when a month had passed without tension, without the tight mouth, the unmotivated smile, the unfathomable remark, they went to the Swiss Alps for the Christmas holidays.

妮可又显得井井有条了。 一个月过去了， 没有紧张，没有紧绷的嘴巴， 没有无动于衷的微笑， 没有深不可测的评论， 他们去瑞士阿尔卑斯山过圣诞假期。