《后汉书·列传·蔡邕列传下》
后来王允失悔，想不杀掉他，已经来不及了。
允悔，欲止而不及。
Later, Wang Yun regretted it and wanted to spare him, but it was too late.
<s>[INST] Convert the following English text into Classical Chinese: Later, Wang Yun regretted it and wanted to spare him, but it was too late. [/INST] 允悔，欲止而不及。</s>
Convert the following English text into Classical Chinese: Later, Wang Yun regretted it and wanted to spare him, but it was too late.
user
允悔，欲止而不及。
assistant