他拍着胸脯保证，他绝不会让他们失望。
He thumped his chest, promising that he would never let them down.
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thumped英 /θʌmpt/|美 /θʌmpt/
解释
thumped 是动词 thump 的过去式，thump 本义是“重击、猛击”，通常指用拳头或类似的物体重重地敲打。
He thumped his chest, promising that he would never let them down.
thumped 是动词 thump 的过去式，thump 本义是“重击、猛击”，通常指用拳头或类似的物体重重地敲打。
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