挑食的英文是 "picky eating" 或 "fussy eating." 挑食的来源可能来自于人们对食物的偏好和偏见，导致他们只喜欢吃某些特定的食物。

例句：

She's very picky about what she eats, so it's hard to find something she'll enjoy. 她很挑食，所以很难找到她喜欢吃的东西。

He's a fussy eater and only likes to eat a few specific foods. 他挑食，只喜欢吃几种特定的食物。