polystyrene
n[U]
type of light firm plastic with good insulating properties, used esp for making containers 聚苯乙烯
[attrib 作定语]
a polystyrene box 聚苯乙烯塑料盒.
🗣️ 情景例句
No. Instead of exercising, I photographed the class.
没有, 没有, 我在给他们拍照。
Nothing comes from (or of) nothing.
无风不起浪。
The man smiled pleasantly.He did not understand English! He spoke German.He was a tourist.