Sasd
结构化分析和结构化设计
🗣️ 情景例句
Their after-sales service was just so bad that I decided to never buy anything from that shop again.
他们的售后服务太差了，所以我决定从此不再能家商店买东西。
Behave!
安分点！
Can you find them?
你找得到吗？