往用过的塑料瓶里再装水或者装食用油、酱油、醋等调料,是很多家庭的普遍做法。但正是这些最常见、看似普通的塑料瓶却藏着鲜为人知的秘密,事关我们的身体健康。这些塑料瓶的底部一般都有一个三角形的标志,标志里面还有一串数字。可别小看这个标志中的数字,它对我们的身体健康非常重要。 It is a common practice in many families to reload water or add oil, soy sauce, vinegar and other spices to used plastic bottles. But it is these common, seemingly ordinary plastic bottles that harbor little-known secrets about our health. The bottom of these plastic bottles generally have a triangular logo, there are a series of numbers inside the logo. Do not underestimate the number in this sign, which is very important to our health.