次层为淬火马氏体组织；

The sublevel is marstenite quenching structure.

youdao

该政党的领导层正聘用管理顾问来帮助准备下一次选举。

The party leadership is using management consultants to help prepare for the next election.

《柯林斯英汉双解大词典》

你相信你的绒毛会慢慢地、一次一层地剥开。

You trust that the peeling of your fluff will reveal slowly, one layer at a time.

youdao

When I started merging, I did merging three times across this whole board, this level, this level, and this level, and each time because of the way I was advancing my fingers I touched each number just once.

在整个过程中，我一共做了,三次合并，这一层，这一层，和这一层，而且每次,由于要前移手指，因此对每个数字,仅仅移动了一次。

哈佛公开课 - 计算机科学课程节选