Polyacetal
[化] 聚缩醛
🗣️ 情景例句
Why do you feel you're qualified for this job?
你为什么觉得你能胜任这项工作？
Does John have a yellow pencil?
约翰有一支黄铅笔吗？
It's the most expensive model in the shop.
这是店里最贵的型号。