Translation

• It's hard to clap with only one hand.
• It takes two to tango
• It's difficult to achieve anything without support.

Synonyms

• 一筹莫展, 举鼎绝膑, 别无良策, 力不从心, 力不胜任, 回天乏术, 心余力绌, 心有余而力不足, 无从, 无力回天, 无法, 无能为力, 无计可施, 望洋兴叹, 束手无策, 没法儿, 没辙, 没门, 没门儿, 爱莫能助, 独木不成林, 独木难支, 鞭长莫及, 黔驴之技, 黔驴技穷