Perhydrocyclopentanophenanthrene
环戊烷多氢菲
🗣️ 情景例句
May I ask where you are from?
我可以请问你是哪里人吗？
Foam plastics are applied to protect the goods against press.
泡沫塑料用来防止挤压。
Where do you work?
你在哪儿上班？