红薯、山药、甜菜和韭菜是人们喜欢吃的其他几种块根类蔬菜。
Sweet potatoes, yams, beets, and leeks are some other root vegetables that people like to eat.
都是甜菜属，就像黑拉布拉多犬和金毛都属狗类。
They're all Beta vulgaris, the way black Labradors and golden retrievers are all dogs.
比如种上成熟快的蔬菜，如生菜、青菜或甜菜时兼种成熟较慢的蔬果，如南瓜属植物或攀沿类豆荚。
One example involves combining fast-maturing vegetables, such as lettuce, field greens or beets, with slower-maturing ones like winter squash or pole beans.
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