Butadiene
n. 丁二烯\\n[化] 丁二烯; 丁间二烯
🗣️ 情景例句
Like setting up a regular weekly reading program.
譬如说开办一项每周一次的定期阅读计划。
Do now waste them, but use them while they are fresh.
不要浪费了这些，要趁未落伍时善加利用。
She was choosing a book. He told her about the accident.
她正在选书。他将发生的情况告诉了她。