?serve as a contrast or foil;set off ?foil for sb or sth 紅花要有綠葉～。Red flowers need to be set off by green leaves.or:Green leaves provide a perfect foil for red flowers./他的夫人是個(gè)大名鼎鼎的電影明星，在社交場(chǎng)合他只能當(dāng)夫人的～。His wife is a famous film star. At social gatherings he can merely serve as a foil for her.