occasionally

adv.

偶尔；偶然；有时候；

1. They enjoy a night out occasionally.
   他们偶尔出去玩上一个晚上。
2. He writes letters to me occasionally.
   他偶尔写信给我。
3. Occasionally they would come to dine with us.
   他们偶尔会到这里来和我们吃一顿饭。

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