adv.谨慎地；慎重地
They had prudently withdrawn as soon as the van had got fairly under way. 他们在蓬车安全上路后立即谨慎地离去了。
They saw that the human race had only one world to live in and that, unless it managed its affairs prudently, all human beings may perish. 他们看到，人类只有一个可以生存的世界，除非人类更谨慎地处理世界事务，否则全体人类就可能灭亡。
adv.鲁莽地；不小心地
