Polyphenylene
聚亚苯基
🗣️ 情景例句
And how old are you?
你几岁了？
Beware of a silent dog and still water.
警惕无声之狗会咬人，平静之水会覆舟。
For him, caves have the same peculiar fascination which high mountains have for the climber.
对洞穴探险者来说，洞穴有一种特殊的魅力，就像高山对登山者有特殊魅力一样。