英文字彙DNA(29)：動詞字尾–en

常用動詞字尾 –en

1. weaken = weak+en, 使虛弱

2. strengthen = strength+en, 加強

3. sharpen = sharp+en, 使銳利

4. threaten = threat+en, 使威脅

5. heighten = height+en, 使增高

6. hasten = haste+en, 催促

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