lǎo / shī / nài / xīn / jiě / yí / hòu / xué / shēng / men / zhōng / yú / míng / bai / le / zhè / ge / shí / yàn / wèi / shén / me / shī / bài

老师耐心解疑后，学生们终于明白了这个实验为什么失败。

After the teacher patiently cleared up their doubts, the students finally understood why the experiment had failed.