Ethylethylene
丁烯-1
🗣️ 情景例句
OK, I guess.
我想还好吧。
No. I'm going this way. Hope I can see you sometime again.
不，我要走这一条路。但愿有朝一日能在相见。
One day, the Shutes heard that there was a good doctor in a town not far away.
有一天，舒特家人听说不远的镇上有一位好医生。