单词：common salts
common salts的用法和样例：
例句
- Common salt is a compound of sodium and chlorine.食盐是钠和氯的化合物。
- This water has in it about the same amount of salt, common table salt, as there was in the water of the sea in which the earliest organisms swam.这种水含有一定量的盐，即普通的食盐，它与最早期生物体浮游过的海水中的含量是一样的。
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