Phthalidyl
2-苯并[C]呋喃酮亚基
🗣️ 情景例句
... and I do need some advice on a difficult problem.
……我的确有一个难题要请教你。
Penny and penny laid up will be many.
积少成多。
But Wu Dong ran fastest of all.
但吴东在三人中跑得最快。