Definition: one of a group of natural substances that you need to be healthy Level: B2
橙子富含维生素C。
Oranges are full of ___vitamin C.
她每天服用维生素补充剂。
She takes a daily ___vitamin supplement.
缺乏必需维生素的饮食会导致健康问题。
A diet lacking essential ___vitamins can cause health problems.
