Hardens
v. （使）变硬( harden的第三人称单数 ); （使）坚固; （使）硬化; （使）变得坚强
🗣️ 情景例句
The Molinas are a large family.
Molina家是一个大家庭。
Better ask twice than lose you way once.
宁愿问路两次胜过迷路一次。
Since its discovery, it has become a sort of potholers' Everest.
自从被发现以后，这个洞成了洞穴探险者的珠穆朗玛峰，