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

“样样通，样样松。”这句俗语指的就是他们。

There are no jack of all trades here.

这里不需要样样通样样松的。

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

老父亲不仅仅是他私业上的多面手，也是他最好的朋友。

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

他是从事哲学和科学工作的多面手。

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

那过于多元化的冒着成为万事通却一无是处的风险。

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

从上述的可以很明显地看出选修课能够给学生带来许多的好处。但是如果高校让学生选过多的选修课，尤其是过多地选修本专业以外的课程，也会对学生产生不利的影响。比如一个工程学专业的学生完成了很多社会学和类学的课程，而本专业的课程只选了二三门，这就很可能造成他的专业技能不精，也无法胜任研究生课程的学习。学生要避免成为涉猎众多却没专长的毕业生这也是至关重要的。

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

所以，如果你的技能组合过于多样化，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，万事通”是一句古语，指的是一点点就能做很多事情的。

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，如果你想成为所有行业的杰作并且非常全面， 那么你可能会想要培养不那么强大的智力。

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——对某的负面评价——如果你说“她是万事通，一无是处”。“交易”在这里只是指不同的技能。