Xanthates
黄原酸盐
🗣️ 情景例句
Remembering the past was his only ple4asure.
回忆往事是他唯一的乐趣。
You'd better see a doctor about that stomachache.
你胃痛最好去看医生。
Why are there three prices quoted for this part?
这种零件为什么有三种不同的报价？