pitch in

柯林斯词典

pitch in (pitching,pitched,pitches)

• 1. PHRASAL VERB If you pitch in, you join in and help with an activity. 参与并帮助[非正式]

  The agency says international relief agencies also have pitched in. 该机构说，一些国际救援机构也参与其中并提供了帮助。

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