Polyisobutene
聚异丁烯; 聚异丁烯
🗣️ 情景例句
There's nobody here!
这里一个人都没有
Here you are , please check.
给你，请查一下。
That the equipment of modern camping becomes yearly more sophisticated is an entertaining paradox for the cynic,
现代露营装备一年比一年讲究，这对那些厌世嫉俗者来说是一件有趣的自相矛盾的事情。