wallflower

复数：wallflowers

n.

any of numerous plants of the genus Erysimum having fragrant yellow or orange or brownish flowers

perennial of southern Europe having clusters of fragrant flowers of all colors especially yellow and orange; often naturalized on old walls or cliffs; sometimes placed in genus Erysimum

同义词：Cheiranthus cheiriErysimum cheiri

remains on sidelines at social event

1. The wallflower bloomed beautifully on the side of the house.
   牵牛花在房子的侧面开得很美。
2. She felt like a wallflower at the party, standing alone in the corner.
   她在派对上感觉自己像个墙角花，孤零零地站在角落里。