Poly(p-hydroxybenzoic acid)
[化] 聚对羟基苯酸; 聚对羟基苯甲酸
🗣️ 情景例句
How do you spend your leisure time?
你是怎样打发业余时间的？
Why didn't you write me?
为什么你不给我写信？
His work starts at half past eight, and finishes at a quarter to five.
30开始工作，4：45下班。