The saying, “A jack of all trades is master of none, ” is for them.

“通，。”这句俗语指就是他们。

There are no jack of all trades here.

这里不需要通。

Not just his personal jack of all trades, but his best friend.

老父亲不仅仅是他私人业务上多面手，也是他最好朋友。

He was a jack of all trades who did philosophy and science.

他是从事哲学和科学工作多面手。

Those who diversify too much run the risk of being a jack of all trades and master of none.

那些过多元化人可能会面临成为万事通、一事无成风险。

It is critical that students avoid becoming a " jack of all trades and a master of none " .

从上述讨论中可以很明显地看出选修课能够给学生带来许多好处。但是如让学生选过多选修课，尤其是过多地选修本专业以外课程，也会对学生产生不利影响。比如一个工程学专业学生完成了很多社会学和人类学课程，而本专业课程只选了二三门，这就很可能造成他专业技能不精，也无法胜任研究生课程学习。学生要避免成为涉猎众多却没专长毕业生这也是至关重要。

So, if you have too much diversity in your skill set, you may be a jack of all trades but master of none.

因此， 如你技能太过多化，你可能是万事通， 但一无是处。

The expression " a jack of all trades and master of none" is an old expression to refer to people who are able to do many things a little bit.

“万事通，无所不能”这句话是一个古老表达方式，指是能够做很多事情人。

If, for example, you want to be a jack of all trades and be very well rounded then probably you’re going to want to nurture the intelligences which aren’t that strong.

例如，如你想成为所有行业杰作并且非常全面， 那么你可能会想要培养不那么强大智力。

This is a criticism – a negative statement about someone – if you say " She is a jack of all trades and master of none." " Trades, " here, simply means different skills.

这是一种批评——对某人负面陈述——如你说“她是万事通， 但一无是处。 ” “行业”在这里只是意味着不同技能。