今天的视频介绍我们生活中不可或缺的蔬菜。
蔬菜富含维生素和矿物质，低脂肪和卡路里。在日常饮食中多摄入蔬菜，能减小癌症、中风、心血管病和其他慢性疾病的发生概率。但没有任何一种蔬菜能提供人体所需的所有营养，所以应该要摄入多种多样的蔬菜。
按照蔬菜的可食用部位来划分的话，可以分为以下几类：
根类蔬菜：胡萝卜、小萝卜（红色或白色）、番薯（南方话）/山芋（北方话）;
茎类蔬菜：芦笋/龙须菜、球茎甘蓝；
块茎蔬菜：土豆；
叶类蔬菜：卷心菜（永新话：包菜；北方话：大白菜）、西芹、生菜、菠菜；
鳞茎类蔬菜：蒜、韭葱和洋葱；
花菜类蔬菜：西兰花、花椰菜（南方人：花菜；北方人：菜花）；
被认为是蔬菜的水果：黄瓜、茄子、秋葵、甜玉米、南瓜、辣椒和西红柿。
种子类蔬菜：一般都是豆类，比如豌豆、大豆。
In today’s video, we will talk about vegetables.
Vegetables play an important role in human nutrition. Most are low in fat and calories but are bulky and filling.When vegetables are included in the diet, there is found to be a reduction in the incidence of cancer, stroke, cardiovascular disease, and other chronic ailments.A variety of products should be chosen as no single vegetable provides all the nutrients needed for health.
Vegetables are usually classified on the basis of the part of the plant that is used for food. The root vegetables include beets, carrots, radishes, sweet potatoes, and turnips. Stem vegetables include asparagus and kohlrabi. Among the edible tubers, or underground stems, are potatoes.
The leaf and leafstalk vegetables include cabbage, celery, lettuce, and spinach.
Among the bulb vegetables are garlic, leeks, and onions. The head, or flower, vegetables include broccoli, and cauliflower.
The fruits commonly considered vegetables by virtue of their use include cucumbers, eggplant, okra, sweet corn, squash, peppers, and tomatoes.
Seed vegetables are usually legumes, such as peas and beans.
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