Perfluoro-petroleum
[化] 全氟化石油
🧩 词语组成解析
🗣️ 情景例句
Hi, Son.
嗨 儿子。
What did you have for lunch?
你中午吃些什么？
I went on walking, bending down because the roof of the cave was not very high.
因为洞顶不是很高，我继续弯着腰往前走。