harden
Definition
To become or make something become solid, firm, or less compassionate.
日本語 固くなるまたは、より厳しくなる
Example
"The clay will harden when it's left in the sun for several hours."
To become or make something become solid, firm, or less compassionate.
日本語 固くなるまたは、より厳しくなる
"The clay will harden when it's left in the sun for several hours."