It is, however, necessary on occasion to work outwith these hours.然而，有時(shí)候在這些時(shí)點(diǎn)之外也需要工作。He treated them seriously and, on occasion, entertained them hilariously.他對(duì)待他們嚴(yán)肅認(rèn)真，偶爾又逗得他們捧腹不已。Nobody is perfect, and everyone acts tho...