Coupon system
[经] 附送赠券的商品推销法
🧩 词语组成解析
coupon
['kupɑn]
n. 优惠券;息票，通票;试样，试件;配给券;
🗣️ 情景例句
Where there's smoke, there's fire.
事出必有因，无风不起浪。
He studied quite a lot.
他非常用功。
They went through the rooms, being careful to touch nothing, as they did not want to hinder the police in their search for fingerprints.
他俩搜遍这每一个房间，小心翼翼地不接触任何东西，因为他们怕妨碍警察寻找指纹。