adj.单独的
This solute will be referred to as a tracer.
这种溶质称为示踪剂.
When common salt is added to water, the salt is the solute.
当食盐放在水里时, 食盐就是溶质.
In some cases the solute can associate in solution.
在某些情况下,溶液中的溶质可以互相结合.