You've persuaded your father to agree to one of your requests so I should let well alone in case he changes his mind.

你已经说服你父亲答应你的一个要求，因此我不必再插手了，以免使他改变主意。

Another problem is that even a public consultation, let alone public law-writing, takes a lot of time and money to do well, especially when large groups are involved.

另一个问题是不要说让人们参与撰写法律了，即使是公共咨询要想做好也得花费大量的时间和金钱，特别是有大群人参与的时候。

Anxiety born in human genes is well enough to give people a hard time, let alone the lifelong anxiety caused by death. It is said that this innate anxiety disorder doesnot only affect humans.

就不用说死亡能让我们一生焦虑了，人类基因中自身携带的焦虑就足以让人们焦头烂额了，这种与生俱来的焦虑症候据说并不是人类的专利。

In most cases, the issue comes down to the fact that an organization allocated its budget long before the solution requirements were even collected, let alone well understood.

在大多数情况下，问题归结为组织远在解决方案需求收集之前就分配其预算了，更不用提很好地了解了。

I’d like to point out that even science is a science, and still very few people can do it, let alone do it well.

我想指出的是，即使像科学这门学科，也只是为数不多的人才能从事，能做出贡献的就更少了。