n.分娩的痛苦；阵痛；辛劳
v.苦干；辛劳；（因分娩）发生阵痛
Mothers know the travail of giving birth to a child. 母亲们了解分娩时的痛苦。
He gained the medal through his painful travail. 他通过艰辛的努力获得了奖牌。
