아마도 用英语:

A child who is a native speaker usually knows many things about his or her language that a non-native speaker who has been studying for years still does not know and perhaps will never know.

If you can't go to an English-speaking country to study, perhaps you can find an English native speaker living nearby that can help you learn English.

Perhaps not.

Age may have one side, but assuredly Youth has the other. There is nothing more certain than that both are right, except perhaps that both are wrong.

The dean sighed and said: "I think that this woman is perhaps... my own cousin".

And even outside these nations, English is perhaps more widely used as a medium of international communication than any other language.

Astronomy is perhaps the science whose discoveries owe least to chance, in which human understanding appears in its whole magnitude, and through which man can best learn how small he is.

The sexes differ, not only in stature and muscular force, but perhaps even more decisively in temperament, and this must early have given rise to a corresponding division of labour.

It is hard, perhaps even impossible, to define normal sensory perception.

Probably you would have swarms of earthquakes and some surface uplift and perhaps some changes in the pattern of behaviour of the geysers and steam vents.

You use perhaps to express uncertainty, for example, when you do not know that something is definitely true, or when you are mentioning something that may possibly happen in the future in the way you describe

Sometimes I wonder if this world is just in someone's head, and he dreams us all into existence. Perhaps it's even me.

In other words, physical obstacles, perhaps unknown to the original surveyor and engineer, requiring alterations to be made in order to surmount them.

Perhaps having realized it was impossible to persuade her, Ms. Kurosaki sighed and sat down in her seat.