[chā shǒu]
(参加做事) take part; lend a hand
be ready to help but not know how to
想帮忙又插不上手
You don't have to join in; there are more than enough people on the job already.
人够多了, 您就不用插手了。
have a hand in
插手某事
meddle too much with things
插手太多
meddle in everything
到处插手