Trading stamps
[经] 商品券
🧩 词语组成解析
[经] 交易
n. 邮票；印记；图章（stamp的复数）
🗣️ 情景例句
When you read, read as loudly as possible, as clearly as possible and as quickly as possible.
当你读的时候，要尽量大声、尽量清晰和尽量快速。
What did you do the week before last?
上上星期你干了什么？
employing full-time technicians and run on specially-written software.
雇用专职的技师，而且得用专门编写的软件才能运行。