Obligation sale
[经] 销售义务, 销售契约(合同)
🧩 词语组成解析
sale
[seil]
n. 卖，出卖;销售额，销售;销路;拍卖;
🗣️ 情景例句
You're on the day shift now.
你现在上白班。
Don't forget to thank him.
不要忘记谢谢他。
Then he lent me a book.
之后还借给我一本书。