There is something so enchanting, so compelling, so overwhelming about her that Mark has come under Sue's spell. If you should ever be near Sue, be careful! To be under someone's spell is to be unable to resist his or her influence. ‘I can't explain it but Sue has me under her spell,' Mark sighed.
Spell 是“符咒”的意思。 所以 Under Someone's Spell 意思是指抵挡不住某人的影响，或者被某人迷住。
