在那次晚宴上，我听到他作了一番非常有说服力的陈词。I heard him make a very eloquent speech at that dinner.书中的有些论述肤浅琐碎，毫无说服力。Some of the discussion in the book is lightweight and unconvincing.他的推销词流畅又有说服力。His sales pitch was smooth and convincing....
They looked pale and unhealthy, with unwashed hair and sunken cheeks.他们脸色苍白，精神不振，头发脏乱，两颊深陷。Avoid unhealthy foods such as hamburger and chips.不要吃不健康食品，如汉堡和薯条。His skin had an unhealthy greyish tinge.他的皮肤有种不健康的淡灰色。...
The runway is clear — go ahead and land.跑道畅通无阻，开始着陆吧。Go ahead and cry. Don't hold it in.只管哭吧。别忍着。The council has given the go-ahead to start building.委员会已批准破土动工。...