Polytef
[化] 聚四氟乙烯
🗣️ 情景例句
A journey of a thousand miles begins with a single step.
千里之行，始于足下。
They extended $2.5 million in loans to another country.
他们向另一国提供250万美元的贷款。
The Shute family lived in the southern part of the USA.
舒特一家住在美国南部。