easier said than done
US /ˈiːziər sɛd ðæn dʌn/
UK /ˈiːziər sɛd ðæn dʌn/

1.
说起来容易做起来难
something that sounds simple but is difficult to achieve
:
•
Losing weight is easier said than done.
减肥说起来容易做起来难。
•
Finding a new job quickly is easier said than done in this economy.
在这种经济形势下,快速找到新工作说起来容易做起来难。