n.向伤性
He gained the medal through his painful travail.
他通过艰辛的努力获得了奖牌.
He did whatever he could to ease their travail.
他为减轻他们的辛劳做了力所能及的一切。
Mothers know the travail of giving birth to a child.
母亲们了解分娩时的痛苦.
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