harden
US /ˈhɑːr.dən/
UK /ˈhɑːr.dən/
动词
1.
变硬, 使变硬
to become or make something rigid, firm, or solid
示例:
•
The concrete will harden within a few hours.
混凝土会在几小时内变硬。
•
You can harden the clay by baking it in the oven.
你可以通过在烤箱里烘烤来使粘土变硬。
2.
变硬, 变强硬
to make or become less sympathetic, kind, or vulnerable
示例:
•
Years of working in the prison had hardened his heart.
在监狱工作的多年经历使他的心变硬了。
•
Public opinion began to harden against the protesters.
公众舆论开始对抗议者持强硬态度。
在 Lingoland 学习这个单词