weigh onsb/sth
—phrasal verbwithweighverbuk/weɪ/us/weɪ/
If aproblemorresponsibilityweighson you, it makes youworriedorunhappy.
（问题、责任等）使（某人）焦虑不安，使（某人）担忧
He's underhugepressureatworkand it's reallyweighingon him.他工作压力很大，内心负担很重。
Sheknewshe had beenunfairto him and itweighedheavilyon hermindfor alongtime.她知道自己以前对他很不好，这件事压在她心头已经很长时间了。