Silfos
西尔福斯铜银合金
🗣️ 情景例句
We had a great time, Mom.
我们玩得非常开心，妈妈。
Are you free tomorrow?
你明天有空吗？
The airport was built years ago, but for some reason it could not be used then.
机场是许多年前建的，但由于某种原因当时未能启用。