pitch in 【非正式用語】

To set to work vigorously.

使勁干，投入：精力充沛地投入工作

To join forces with others; help or cooperate.

協力，做貢獻：配合他人；幫助或合作

pitch into 【非正式用語】

To attack verbally or physically; assault.

猛烈攻擊：口頭或武力攻擊；攻擊

pitch on 或 pitch upon 【非正式用語】

To succeed in choosing or achieving, usually quickly

選出，決定，選定：成功且常是迅速地選定或實現

pitched on the ideal solution.

做出理想的決定

make a pitch

make a bid to obtain a contract or other business

投標

pitch someone/thing against

(informal)pit someone or something against

(非正式)使爭斗，使競爭

pitch in

(informal)vigorously join in to help with a task or activity

(非正式)起勁地投入（任務，活動）

pitch into

(informal)vigorously tackle or begin to deal with

(非正式)（起勁地）干工作，著手處理

pitch up

(informal)turn up; arrive

(非正式)出現；到達

pitch something up (或 pitch up)

(Cricket)bowl a ball so that it bounces near the batsman

(板球)投上旋球