我一直在找一款很好的天然止汗去味剂，不含任何金属物质，如锌，明矾盐等，这款是到目前为止唯一适合我的产品。
I've been trying to find a good natural deodorant that contains no metals of any kind (even zinc and alum salts), and this is the first one that actually works for me!
溶解电离时好似是两种不同的盐，结晶时却构成一种物质，如明矾。
A salt, such as alum, that ionizes in solution as if it were two separate salts but forms a single substance upon crystallization.
蓝宝石水晶玻璃的主要原料是一种经过洗涤后除去了所有异物的盐(氨明矾)。
To make a sapphire crystal, the basic material used is a salt cleansed from any foreign body (ammoniacal alum).
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