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The girl joined in our conversation. 那姑娘参加了我们的谈话。

He joined up in the last months of the war. 在战争最后几个月他参了军。

Will you join with us and give him a present? 你要不要和我们一道送他一份礼？

Alice jumped at the chance of going to Egypt. 阿丽丝立即抓住这个去埃及的机会。