下降 下去 下来 遗传 屈尊英释
Our plane started to descend..我们的飞机开始下降。
I heard his footsteps descending the stairs..我听到他下楼的脚步声。
descend from,由…传下来的;起源于
descend on,袭击
descend upon,vt. 突然到达);袭击(突然降临