他关上门,踏上了1/4英里长的下山路.He closed his door and started the quarter-mile walk down the hill.我挤出人群，踏上了自动扶梯。I pushed through the crowds and on to the escalator.我们很不愿意踏上如此漫长艰辛的回家之路。We were reluctant to start the long trudge home....
...as if he were a pesky tourist asking silly questions of a busy man.好像他是个让人讨厌的旅客，尽向忙碌的人问些愚蠢的问题Those pesky people are really annoying.那群讨厌鬼真叫人讨厌.And what about those pesky imbalances?而且烦人的全球失衡问题怎么办 呢 ?Those pesky salesm...
The plaintiff's sole witness, a gambler and layabout, was easily discredited.原告唯一的证人嗜赌成性，游手好闲，其证词一下子就被推翻了。He is a morose, work-shy layabout.他是个整天垂头丧气、游手好闲的人。...
The technique has been to mutate the genes by irradiation or chemicals.该技术是通过放射线照射或者使用化学方法使基因变异。the ability of the virus to mutate into new forms病毒变异成新菌株的能力A newer anti-HIV drug called pyridinone caused HIV to mutate int...