Ethylethylene
丁烯-1
🗣️ 情景例句
Will your family be attending the graduation ceremony?
你的家人要来参加你的毕业典礼吗？
The sight of such a beautiful girl took Tony's breath away.
看到如此美丽的女孩，他目瞪口呆。
This in turn had an effect on the food supply for wolves.
这样又影响了狼的食物供应。