Dienite
丁烯均聚物
🗣️ 情景例句
If I were you I'd change the beginning.
如果我是你的话，我会把开头改一改。
Please ask John to turn on the lights.
请要求约翰打开灯。
The shape and dimensions of the skyscrapers depend entirely on the necessity of obtaining the maximum income per square foot of ground,
每平方英尺地皮取得最大收入