Propylene tetramer
[化] 四聚丙烯
🧩 词语组成解析
n. 丙二醇\\n[化] 丙烯
n. [化]四聚物
🗣️ 情景例句
555-7700. 555 7700
555-7700. 555 7700
The sudden noise scared the dog away.
突然突然的噪音把狗吓跑了。
They made no effort to hide their amusement whenever I produced a packet of sweets from my pocket.
每当我从口袋里掏出一包糖果时，他们都毫不掩饰地表现出他们对此感到非常好笑。