夏末,北方市场上偶有一种外形较为奇特的蔬菜出售。这种蔬菜长可达一米多,绿白色,或扭曲或笔直,状如一条条活蛇,又好似巨大的豇豆,因此人们形象地称之为“蛇豆”。但如果你仔细观察,会发现它们并不象豆科植物的荚果那样,可沿背、腹两缝开裂。用刀切开后,只 In the late summer, there was occasionally a more unusual shape in the northern market for sale of vegetables. This vegetable grows up to one meter, green and white, or twisted or straight, shaped like a living snake, but also looks like a huge cowpea, so people vividly call it “snake beans.” However, if you look closely, you will find that they do not crack like the pods of the legumes along the back and the belly. After cutting with a knife, only