Polyphenylether
聚苯醚
🗣️ 情景例句
I could tell something was up by the look on their faces.
我一看他们的脸色就知道有事。
Where the water is shallow, no vessel will ride.
水浅无船行。
Will you please sweep the floor and tidy the classroom every day?
请你们每天都打扫地板、整理教室，好吗？