Pbt
[化] 聚对苯二甲酸丁二酯
🗣️ 情景例句
Welcome to the South Street restaurant, folks.
欢迎光临南街餐馆， 各位。
She is now on vacation.
她正在休假。
The time I spent at exercises gradually diminished.
我花在锻炼上的时间逐渐减少，