Polyisobutene
聚异丁烯; 聚异丁烯
🗣️ 情景例句
They fleeced me.
他们骗了我。
What is the weather like in this country?
这个国家的气候如何？
This immense chasm has been formed by an underground stream which has tunneled a course through a flaw in the rocks.
这个深邃的洞穴是由一条地下暗泉冲刷岩石中的缝隙并使之慢慢变大而形成的。