由于年代久远,其渊源已无法考证.It has an origin lost in the mists of antiquity.我不知道这则旧传闻的出处，我从来没能考证出结果。I don't know where that old story came from, I've never been able to track it down.博物学中虽然有许多类似的假设，却从没人对此考证过。But as with ma...
他要有挑战性,能有一番作为的事业.He wants a career that offers a challenge.不过,近来一些事件也提醒人们注意不作为的风险.Yet there have also been recent reminders of the dangers of inaction.受托人违反信托义务可以是作为的,也可以是不作为的.A breach of trust can be active or passive....