Polytef
[化] 聚四氟乙烯
🗣️ 情景例句
the first settlers in America.
他们是第一批来美国定居的移民。
A bad compromise is better than a good lawsuit.
吃亏的和解也比胜诉强。
Would you be kind enough to sign our visitors book?
请在来宾簿上签名好吗？