伦道夫的著作专门论述污染对健康的影响。Randolph's work was exclusively concerned with the effects of pollution on health.《牛津化学初级读本》丛书旨在论述有机化学中的重要问题。The Oxford Chemistry Primers aim to cover important topics in organic chemistry.书中的有些论述...
然后他割下一截绳子,走到船梢去套住鱼尾巴.He cut the rope then and went astern to noose the tail.小牛要用套索套住,用绳子捆得结结实实.The calves would have to be lassoed and roped up.套索把兔子的脚套住了.The rabbit's foot was caught in a snare....