descend on/uponsb/sth
—phrasal verbwithdescendverbuk/dɪˈsend/us/dɪˈsend/
If agroupofpeopledescendon aplaceorperson, theyarrive, usually withoutwarningor without beinginvited.
突然造访，突然到达
Sorry todescendon you like this, but we didn't have aphonetocallyou.如此唐突造访非常抱歉，我们没有电话，不能提前通知你们。
Thepolicedescendedon thehousein the earlyhoursof themorning.凌晨警察突然闯进那所房子。