学习笔记：
broccoli：西兰花
例句：And broccoli and cabbage were singled out as the most protective foods.
吃菜花和圆白菜效果最好。
cabbage：卷心菜，甘蓝菜
例句：Do you like cabbage?
你喜欢吃甘蓝菜吗?
cauliflower：花椰菜，花菜
例句：A plant cultivated for an edible part, such as the root of the beet, the leaf of spinach, or the flower buds of broccoli or cauliflower.
蔬菜因其可食部分而种植的植物,如甜菜根、菠菜叶或者椰菜、花椰菜的花蕾等。
sweet potato：白薯
brussels sprouts：芽甘蓝