孤掌难鸣

1.cannot clap with one hand; alone and helpless; A single palm cannot clap.; It is difficult [impossible] to make a clap with one palm [hand].; It's hard to succeed without support.; One can hardly do much single-handed.; One who stands alone has no power.; single-handed and helpless; The effort of an individual does not count much.; The voice of one man is the voice of no one.; To effect this single-handed was too difficult.