基本解释聚苯乙烯同根派生 英汉例句Keywords food packaging;ployethylene;volatile compound;emendatory suggestion; 食品包装;聚苯乙烯;挥发物;改进建议;Keywords ployethylene glycol 4000;psyllium hydrophilic mucilloid;constipation;function; 关键词聚乙二醇4000;欧车前亲水胶体;便秘;功能性;