on occasion
1. 偶尔; 有时
She visits the city on occasion.
她有时到城里去。
习惯用语as occasion demands1.遇必要时as occasion requires1.遇必要时as occasion serves1.一有适当的时机as occasion offers1.有机会时, 机会到来时by occasion of1.由于; 因为catch occasion by the forelock1.抓紧时机seize occasion by the forelock1.抓紧时机take occasion by the forelock1.抓紧时机choose one's occasion1.选择适当的时机equal to the occasion1.临事能够应付局面for the occasion1.临时give occasion to1.引起; 使发生have no occasion for1.没有...的根据; 没有必要have no occasion to (do)1.没有...的理由[必要]if the occasion arises1.必要的时候if the occasion should arise1.必要的时候improve the occasion1.抓紧时机; 利用机会说教一番on great occasions1.在大庆[盛典]时期on occasion1.有时; 遇必要时upon occasion1.有时; 遇必要时on one occasion1.曾经, 有一个时候on several occasions1.屡次, 好几次on the first occasion1.一有机会on the occasion of1.在...的时候, 值此之际on the present occasion1.当时on this occasion1.这一次rise to the occasion1.有应变之才take occasion to1.抓住...的好时机, 乘机...seize occasion to1.抓住...的好时机, 乘机...take occasion to do1.抓住...的好时机, 乘机...seize occasion to do1.抓住...的好时机, 乘机...