单词	polystyrene
释义	polystyrene noun poly·​sty·​rene ˌpä-lē-ˈstī-ˌrēn  : a polymer of styrene especially : a rigid transparent thermoplastic that has good physical and electrical insulating properties and is used especially in molded products, foams, and sheet materials Example Sentences Recent Examples on the Web The two most common types of plastic found in the study were polyethylene terephthalate (PET), which is used to make plastic water bottles and clothing fibers, and polystyrene, which is found in food packaging, disposable utensils, and straws. Beth Krietsch, SELF, 19 May 2022 San Diego would join 127 other California cities with bans on polystyrene, which is often sold under the brand name Styrofoam. David Garrick, San Diego Union-Tribune, 26 July 2022 On May 19, Trussville adopted a proclamation promising to ban the use of polystyrene, or Styrofoam, in city concession stands and facilities. al, 2 July 2022 Some 128 California cities already have bans on polystyrene. Susanne Rust, Los Angeles Times, 30 June 2022 The disappearance of polystyrene is likely to be the first thing consumers notice. Susanne Ruststaff Writer, Los Angeles Times, 1 July 2022 According to Healthline, some polystyrene containers are safe to microwave if they have been approved by the Food and Drug Administration, which tests the safety of microwavable containers. Caitlin Mclean, USA TODAY, 7 July 2022 The ordinance, which applies only to the unincorporated areas of the county, also bans expanded polystyrene products such as coolers, plates and cups. Susanne Ruststaff Writer, Los Angeles Times, 19 Apr. 2022 To determine if your polystyrene container is microwave safe look for a label on the container indicating so. Caitlin Mclean, USA TODAY, 7 July 2022 See More Word History First Known Use 1927, in the meaning defined above Medical Definition polystyrene noun poly·​sty·​rene ˌpäl-i-ˈstī(ə)r-ˌēn  : a polymer of styrene especially : a rigid transparent thermoplastic that has good physical and electrical insulating properties and is used especially in molded products, foams, and sheet materials
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