例句：
He could have taken a spare key.
他原本可以带上一把备用钥匙的。
How do you spend your spare time?
你在业余时间干什么？
He's studying music in his spare time.
他在空闲时间学音乐。
2024-07-11
例句：
He could have taken a spare key.
他原本可以带上一把备用钥匙的。
How do you spend your spare time?
你在业余时间干什么？
He's studying music in his spare time.
他在空闲时间学音乐。