[误] people have known that accompanying kings is just like accompanying tigers even since the ancient times.

[正] People have known that kings and bears often worry their keepers even since the ancient times.

注：第一句译文西方人未必明白其中的含义，而第二句不仅将原文的意思准确表达出来了，还按照英语的习惯，把君王比作“熊”，十分地道。