Severe steric effects at the reactive carbon would impede the substitution.大的立体效应阻止在碳上的取代.It was intended to impede the apprehension of the person.它旨在妨碍对该人的拘押的.They also impede backmixing of sand.同时也可防止砂子的返混....
It was intended to impede the apprehension of the person.它旨在妨碍对该人的拘押的.They also impede backmixing of sand.同时也可防止砂子的返混.At no time did I make an attempt to impede any investigatory effort.我绝没有试图妨碍过任何调查工作。Severe steric effe...
"Jobs for the boys," said Crosby irreverently.“任人唯亲，”克罗斯比轻蔑地说。On his office door is a small plaque irreverently reading QUIET, PLEASE.在他的办公室门上,有一块嵌上去的小匾,上面不客气地写道:请安静.The student irreverently mimicked the teacher in his p...
Marconi tied several antennas to kites.马可尼在风筝上系了几根天线.Painting, drawing, flying kites, reading, singing and riding bikes.画, 画, 放风筝, 阅读, 唱歌和骑自行车.As the flimsy constructs soared, the men paid out twine until the kites reach...
格林威治天文台的职员们每天对大钟检查两次.Officials from Greenwich Observatory have the clock checked twice a day.盖伊的房子离天文台很近.Guy's house was close to the observatory.应立即通知附近的天文台.The nearest research observatory should be contacted righ...