音标发音英式音标 [ˈpɒl.iˌtʌn.əl]美式音标 [ˈpɑː.liˌtʌn.əl]英式发音 美式发音 基本解释（用于种植的）塑料大棚。同根派生 polytunnel相关词英英字典剑桥英英字典 a long, curved plastic structure that plants are grown under in order to protect them from the weatherpolytunnel剑桥字典polytunnel柯林斯字典