四ㄙˋsì兩ㄌㄧㄤˇliǎng撥ㄅㄛbō千ㄑㄧㄢqiān斤ㄐㄧㄣjīn

  1. （諺語）​比喻用力小而收效大。《蕩寇志·第一八回》：「兵器又不在斤兩上分高低，古人說得好，四兩能撥千斤重。」

英lit. four ounces can move a thousand catties (idiom)​, fig. to achieve much with little effort