优惠码；折扣码
先理解核心含义，再看它在真实句子里的用法。
优惠码；折扣码；优惠码；折扣码
A code, typically alphanumeric, that customers enter to apply a discount or special offer.
Enter the coupon code at checkout to receive 20% off your order.
在结账时输入优惠码即可享受订单八折优惠。
优惠码；折扣码
A code, typically alphanumeric, that customers enter to apply a discount or special offer.
Use coupon code naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
Dictionary facts from AI_SUPPLEMENT.