Eteline
四氟乙烯
🗣️ 情景例句
but I prefer a two-story home.
但我喜欢两层楼的房子。
He gave me a chest X-ray and took my blood pressure.
他给我做了X光检查并且量了我的血压。
why have we had no visitors from outer space yet?
那么我们为什么还未见到外层空间来访的客人呢？