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...
她因为难产,要做剖腹产术.It was a difficult birth : she had to have a Caesarean.她是剖腹产.Her delivery is a Caesarean.他们的头胎婴儿是剖腹产的.Their first baby was born by caesarean....
这个增长百分率缓慢的区域称为坪.This region of slow percentage increase is called the plateau.花粉直接散落在头上, 因而自花受精百分率高.The pollen is shed directly on the stigma, resulting in a high percentage of self fertilization.盘型的百分率随白霜频率而异,自30到90.The...