将需要分析化验的物料倒入最上层的筛内盖好筛盖，然后安放在振筛机座内。

Put the material need to be analyzed and tested into the top of the screen and screen cover, and then placed inside the base in the earthquake sieve.

youdao

在接通所有电源之前，盖好加热器的上端盖。

Reinstate the top cover before reconnecting connecting electrical supplies.

youdao

在接通所有电源之前，盖好加热器的上端盖。

Reinstate the top cover before reconnecting electrical supplies.

youdao

I suppose, again, the optimist says, "Yeah, death is bad, but life is good, sufficiently good to outweigh the badness of the fact that we're going to die.

我假设，再一次，乐观主义者说，“死亡不好，但是生命好，好到足以盖过我们会死,这个事实的坏处。

耶鲁公开课 - 死亡课程节选