descend from

1. 起源于; 是……的后裔

His family descends from the first English immigrants.

他这一家是第一批英国移民的后裔。

descend on/upon

1. 突然袭击

The robbers descended on the village.

强盗突然袭击那村子。

2. 向……涌来

Letters of application descended on them like snowflakes.

申请信件像雪片似地向他们飞来。

descend to

1. 向下延伸至

The mountain path descends to a small river.

那条山间小路向下延伸到一条小河。

2. 堕落到

How come she has descended to stealing?

她怎么会堕落到偷窃的?