poly·sty·rene /ˌpɑliˈstaɪˌrin/
聚本乙烯
poly·sty·rene /ˌpɑlɪˈstaɪ(ə)rˌɪn/ 名詞
聚苯乙烯
polystyrene
n : a polymer of styrene; a rigid transparent thermoplastic;
"expanded polystyrene looks like a rigid white foam and
is used as packing or insulation"