Polytetramethylene azelaate
[化] 聚壬二酸亚丁基酯; 聚壬二酸丁二醇酯
🗣️ 情景例句
Many students are working at part time jobs.
许多学生兼职打工。
I used to wake up early and get up at 7 o'clock.
我过去常早醒来并且在7点钟起床。
namely 6 million million miles.) Radio waves also travel at the speed of light,
即6万亿英里）。无线电波也是以光速传播的。