Oxetone
螺[4.4] 二氧己烷
🗣️ 情景例句
Are you free?
您有空吗？
No, it isn't. It's a bus.
不，那是一辆公共汽车。
Most countries use these satellites to send and receive messages.
大多数国家利用这些卫星发送和接收消息。