醋是一种酸。

Vinegar is an ___acid.

盐酸是一种强酸。

Hydrochloric acid is a strong ___acid.

我们看到一只小黑龙，鳞片像铁一样，向我们冲来并吐酸液。

We saw a little black dragon with scales like iron charging [at] us and spitting ___acid.