Polydimethyl butadiene
[化] 聚二甲丁二烯; 聚二甲基丁二烯
🧩 词语组成解析
n. 丁二烯\\n[化] 丁二烯; 丁间二烯
🗣️ 情景例句
That's great.
真棒！
Why do you always bother me?
你干嘛老是找我麻烦？
He is now satisfied merely to try to stand up, but as soon as he does so a porpoise knocks him flat.
此时的海龟，只要能站起来就满足了，但它刚站起来，就被一只海豚击倒。