英语语法分析

Or add iron to hydrochloric acid and boil the solution to dryness.

又或者将铁放入盐酸中，然后将溶液加热变成结晶。

These small tablets contain one drop of hydrochloric acid and they last about four hours.

这些小片剂每片含有一滴盐酸，药效持续四个小时左右。

Your stomach needs plenty of hydrochloric acid to break down calcium carbonate, so always take your supplement with a meal or snack.

您的胃需要很多盐酸分解碳酸钙，因此请与饭或点心一起服用这些添加物。