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a. 扣紧的
🗣️ 情景例句
He had a great capacity for learning.
他的学习能力很强。
When Greek meets Greek, then comes the bug of war.
两雄相争，难解难分。
Look at this letter from Wang Wei to her penfriend in Australia.
请看这封王伟写给她在澳大利亚的笔友的信。