ph.

1. What sparked off the quarrel?
是什么导致了这场争吵？

1. 导致：spark gap 火花隙 | spark off 导致 | spark plug 激励

2. 引发,诱发：space n .空间,太空 | spark off 引发,诱发 | sparkling adj.亮晶晶的,闪亮的

verb

1. put in motion or move to act

e.g. trigger a reaction
actuate the circuits

Synonym: tripactuatetriggeractivateset offsparktrigger offtouch off