英语语法分析

Prodigiosin is an intensely red pyrrole pigment produced by several bacteria, most notably, Serratia marcescens.

灵菌红素是由若干种细菌特别是粘质沙雷菌产生的一种红色吡咯色素。

Such is the case in pyrrole, thiophene, and furan.

吡咯，噻酚和呋喃的情况就是这样。

Scheme 1. Condensation of pyrrole and benzaldehyde.

图式1吡咯与苯甲醛的缩合反应。