Does that metal pit after contact with acid?
那种金属同酸接触后是否会起凹点？
The acid has burnt a hole in my jacket.
这种酸把我的上衣烧了一个窟窿。
Handle with care, or the acid may get out.
小心轻放，否则酸要淌出来。
Acid acts on most metals.
酸对大多数金属起作用。
Hydrazoic acid in liquid form is very dangerous.
处于液态的`叠氮酸是很危险的。
Acid causes metal to corrode.
酸使金属腐蚀。