density: n.1.稠密;浓厚。2.【物理学】浓度;密度;比重。3.愚钝,昏庸。短语和例子traffic density 交通量。 the density of population 人口密度。
schooling: n.1.学校教育;教育。2.学费。3.训练,锻炼;驯马,练马。短语和例子He did not get much schooling. 他没有上过多少学[受过多少学校教育]。 to shorten the length of schooling 缩短学制[学习期限]。 a man with less schooling 文化水平较低的人。 pay for the school