| 释义 |
descentdescent[diˈsent]n.1.■降, (落)下; 倾斜, 下坡; 下降的方法或工具2.■家世, 血统, 门第; 遗传, 世袭3.■袭击4.■降格, 屈尊; 堕落a gradual descent from land to sea由陆地逐渐倾斜至海The descent of the mountain took nearly two hours.下山差不多花了两个小时。Many Americans are of English descent.许多美国人的祖籍是英国。
习惯用语be of good descent1.■出身好make a descent upon1.■侵入, 袭击descent of man1.■人类由来
特殊用法gradient descent1.■梯度下降rate descent1.■【航空】等速下降 |