There is but one race of true and immortal humans on Barsoom. 埃德加·赖斯·巴勒斯.火星战神.
Sola seemed puzzled herself, as though such strange actions on the part of two humans were quite beyond her, as indeed they were, poor child. 埃德加·赖斯·巴勒斯.火星公主.
You will see it often in humans. 阿瑟·柯南·道尔.福尔摩斯归来记.