| 释义 | 
		phraseweigh on/upon  ! Weigh upon  is more formal than  weigh on,  and is mostly used in writing.    weigh on/upon sb if troubles, problems, or duties weigh on you, they make you feel worried and not relaxed: The question of her children's future constantly weighed on her.weigh on sb's mind Lisa's very quiet - I'm sure there's something weighing on her mind.weigh heavily on His responsibilities weigh heavily on him.
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