[ zìxíng ] 1.(自己做) by oneself 短语和例子 自行处理 settle (the matter) by oneself; 自行安排 make arrangements by oneself; 自行设计制造 be designed and made by oneself; 自行制定政策 decide policies on one's own2.(自动) of oneself; of one's own accord; voluntarily 短语和例子 自行到来 come of itself; 反动派决不会自行退出历史舞台。 the reactionaries will never, of their own accord, step down from the stage of history.3.[天文学] proper motion; self-powered 4.[地] auto-morphic; 自行火箭炮 self-propelled rocket launcher; 自行火炮 self-propelled artillery [gun]