dissolve

To make the syrup, you must dissolve two cups of sugar in boiling water until it is clear.

(Chinese) 制作糖浆时，你必须将两杯糖溶解在沸水中，直到变清澈。

Some tablets are designed to dissolve slowly in the stomach for long-lasting pain relief.

(Chinese) 有些药片设计成在胃里缓慢溶解，以提供持久的止痛效果。