descent

释义

n. 降落, 家系, 侵袭, 血统\n[医] 下降, 世代, 血统 gradient descent 梯度下降 descent method n. 下降法 chinese descent 中国血统；炎黄子孙

例句

Passengers must fasten their seat belts prior to descent.

乘客在飞机降落之前必须系好安全带。