除非他能隐藏自己的51岁，否则他无法把自己变成人类。

Unless he can hide his 51, he can't make himself a human.

youdao

除非他能隐藏自己的51岁，否则他无法把自己变成人类。

Unless he can hide his 51, he can't make himself a human.

youdao