不及物动词

1. (使)凝固;(使)固化
When a liquid solidifies or is solidified, it changes into a solid.

2. 巩固;(使)变可靠;(使)变稳固
If something such as a position or opinion solidifies, or if something solidifies it, it becomes firmer and more definite and unlikely to change.

1. become solid

e.g. The metal solidified when it cooled

2. make solid or more solid
cause to solidify