Polytef
[化] 聚四氟乙烯
🗣️ 情景例句
The government has adopted many measures to promote its economy.
政府采取了许多措施来发展经济。
Does anybody share David's opinion?
有谁同意大卫的观点吗？
the bank must recognize its customer's signature.
因为银行有责任辩认出其储户的签名。