Polyketide
聚酮化合物
🗣️ 情景例句
Well, I guess your mother and I can manage it.
嗯， 我想你妈和我可以设法帮这个忙。
Newspapers are the world's mirrors.
报纸是世界之镜。
Try and stand up.Can you stand up?
试试站起来。你能站起来吗？