The confusion about 'fruit' and 'vegetable' arises because of the differences in usage between scientists and cooks. Scientifically speaking, a tomato is definitely a fruit. True fruits are developed from the ovary in the base of the flower, and contain the seeds of the plant (though cultivated forms may be seedless). Blueberries, raspberries, and oranges are true fruits, and so are many kinds of nut.
科學(xué)家和廚師們對(duì)西紅柿用法的差異常常引起人們的疑惑，這貨到底是水果還是蔬菜？科學(xué)來講，西紅柿就是水果。水果就是在花的子房里發(fā)育而成，含有植物的種子（盡管發(fā)育而成后的果實(shí)有可能是無籽的）。藍(lán)莓，樹莓，以及橙子都是水果，很多種類的堅(jiān)果也是水果。

藍(lán)莓、樹莓、橙子……好多水果！愛吃水果的你，能用英語叫出多少種水果的名字？
快來看看這些水果的英語你有沒有全部get~
↓掃下方二維碼測果蔬詞匯量

As far as cooking is concerned, some things which are strictly fruits, such as tomatoes or bean pods, may be called 'vegetables' because they are used in savoury rather than sweet cooking. The term 'vegetable' is more generally used of other edible parts of plants, such as cabbage leaves, celery stalks, and potato tubers, which are not strictly the fruit of the plant from which they come. Occasionally the term 'fruit' may be used to refer to a part of a plant which is not a fruit, but which is used in sweet cooking: rhubarb, for example.
而從烹飪的角度上來看，一些嚴(yán)格意義上屬于水果的食物比如說西紅柿和豆莢，就被視為蔬菜。因?yàn)樗鼈儽挥脕砼腼冏龀刹穗榷皇亲龀商鹗场Ｊ卟烁鼜V泛地用于其他植物可食用的部分，如卷心菜的葉子，芹菜的莖以及馬鈴薯塊莖，這些從嚴(yán)格意義上來說都不是所屬植物的果實(shí)。有時(shí)候水果還可以用來指用于制作甜食但是非植物果實(shí)的部分，比如說大黃。

So, the answer to the question is that a tomato is technically the fruit of the tomato plant, but it's used as a vegetable in cooking.
所以說，問題的答案就是，從技術(shù)上來說，西紅柿是西紅柿植株的果實(shí)，但是在烹飪上被用作蔬菜。