zhè / gè / biān / jiǎo / àn / lì / suī / rán / bù / cháng / jiàn / què / kě / néng / bào / lù / chéng / xù / zhōng / de / yán / zhòng / wèn / tí

这个边角案例虽然不常见，却可能暴露程序中的严重问题。

Although this corner case is uncommon, it may expose a serious problem in the program.