The shop assistant has undercharged us.售货员向我们要价很低。He had the impression that they always undercharged him.他觉得他们总是少算了帐.He undercharged me two dollars for the wine.我买这瓶酒他少收了我两美元....
She kissed me, careful not to smudge me with her fresh lipstick.她小心翼翼地吻了我，以免把刚刚抹上的口红弄到我脸上。Smudge the outline using a cotton-wool bud.用一根棉签把轮廓抹花。a smudge of lipstick on a cup留在杯子上的口红印...
a man with heavy jowls下巴底下一堆肉的男人Whiskers grew luxuriantly from his ample jowls.他长着浓密的络腮胡子.He had a long lugubrious face with drooping jowls and soft pouches beneath the eyes.他有着阴沉的长脸,下垂的下颚,眼睛下面的眼袋松泡泡的....
His remark did not pertain to the question.他的话同这个问题不相干.I'm afraid that your remark does not pertain to the question.恐怕你的话与这一问题不相干.It does not pertain to you to instruct him.你不适合教训他....
Exciton is electron - hole pair held together by their mutual Coulomb interaction.激子就是由电子和空穴在相互间的库仑力作用下,相互维持在一起的电子 -- 空穴对.As to the emission at 370 nm, It'should result from exciton recombination radiation.而在370nm处的...