what is unusual in this sentence?a quick brown fox jumps over the lazy dog

what is unusual in this sentence?a quick brown fox jumps over the lazy dog
what is unusual in this sentence?a quick brown fox jumps over the lazy dog

what is unusual in this sentence?a quick brown fox jumps over the lazy dog
二十六个字母全在

哪些是不寻常的句子？一只棕褐色的狐狸从懒狗身上跳过去