pitch in 参与；协力；贡献一点

【例句】
And I think these patriotic Americans are willing to pitch in.
我认为这些爱国的美国人都愿意作出贡献。

Doing all this will require not just new policies but a new spirit of service and sacrifice, where each of us resolves to pitch in and work harder and look after not only ourselves, but each other.
做到这一切不仅需要新的政策还需要新的牺牲和奉献精神，靠着这种精神，每个人都下决心全身心投入，更加努力地工作，在照顾好自己的同时，还要互相照顾。