present tense | |
I/you/we/they | toughen |
he/she/it | toughens |
present participle | toughening |
past tense | toughened |
past participle | toughened |
Universities are toughening up their entrance requirements. 大学都在提高入学门槛。
Prison life has toughened him up. 监狱生活使他变得坚强了。
👨🏻🏫 Mr. Ng 麥美倫詞典 📚 – macmillan.mister5️⃣.net
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