I can't understand “what-is-it.”I noted in his voice a touch of what-is-it.

I can't understand “what-is-it.”I noted in his voice a touch of what-is-it.
I can't understand “what-is-it.”
I noted in his voice a touch of what-is-it.

I can't understand “what-is-it.”I noted in his voice a touch of what-is-it.
我从他的语气中察觉出一丝疑惑.

我注意到他的声音里有些不可言说的东西