In old China we could not make a nail, let along (make) machines.

在旧中国，我们连一个钉子都造不了，更不用说制造机器了。

youdao

In places like Qatar and Saudi Arabia, men and women are forbidden from interacting, let along touching.

在卡塔尔和沙特阿拉伯这样的地方，男女交往都被禁止，更不要说身体接触了。

youdao

I let him tag along because he had not been too well recently.

我让他跟着走，因为他最近一直感到不太舒服。

《柯林斯英汉双解大词典》

Sid sneered. 'But to make sure nobody'll let you out, I'll just take this key along.'" "When Nancy could no longer hear the tramp of his heavy boots she was sure Sid had left the house.

VOA: special.2009.08.24

global c Well, let's go ahead and open up global dot c, or you can follow along up here.

好的，我们继续打开，或者你们可以跟随这里个地方。

哈佛公开课 - 计算机科学课程节选

OK, what I would like you to see is I've been printing out, as I went along, actually let's back up slightly and look at the code. There's merge sort.

好的，我想让你们看就是我运行过后,打印出来的结果，我们再回头看一下这段代码,这就是归并排序，输入一个列表。

麻省理工公开课 - 计算机科学及编程导论课程节选

It seems to be difficult to even plan a date for a meeting to discuss what to do, let along actually decide what to do.

FORBES: Solving the Eurozone Crisis

These ships will thus have to take an extremely lengthy and circuitous route even to get into the Mediterranean, let along to get all the way to Syria.

FORBES: The Russians Are Sending Ships to Syria (Again)

"A captain needs to set an example and it's not acceptable for any player, let along a captain, to show dissent at an umpire's decision, " match referee Roshan Mahanama commented.

BBC: Patient Aussies crush West Indies