tempest in a teapot
US /ˈtem.pɪst ɪn ə ˈtiː.pɑːt/
UK /ˈtem.pɪst ɪn ə ˈtiː.pɑːt/

1.
小题大做, 大惊小怪
a great commotion or excitement over a trivial matter
:
•
The argument over the seating chart was a real tempest in a teapot.
关于座位表的争论真是小题大做。
•
Don't worry about their little disagreement; it's just a tempest in a teapot.
别担心他们的小分歧;那只是小题大做。