Ethylethylene
丁烯-1
🗣️ 情景例句
Craft and Craft is the biggest in the country.
Craft and Craft是全国最大的。
Doing is better than saying.
行胜于言。
The Maori have insisted on keeping their own customs and way of life.
毛利人一直坚持保留他们自己的风俗习惯与生活方式。