jack of all trades, master of none

名词 n.

英文释义

名词 n.
  1. A person who has a competent grasp of many skills but who is not outstanding in any one. idiomatic

词源

Expanded form of jack of all trades, which originally was sometimes used as a term of praise.
In the 21st century this phrase has itself been (rarely) expanded to a couplet:
: Jack of all trades, master of none,
: though oftentimes better than master of one.
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