Polyalkane
聚链烷
🗣️ 情景例句
Hi, this is Tony, I have a flat tire, could you come and pick me up?
你好，我是托尼，我的车爆胎了，你能来接我吗？
What time are you going?
你什么时候走？
Recent developments in astronomy have made it possible to detect planets in our won Milky Way and in other galaxies.
天文学方面最新发展使得我们能够在银河系和其他星系发现行星。