乃naai5是si6

English

1. equivalent to either 是[shi4] or 就是[jiu4 shi4]

Examples

• 道德上的恶乃是无知的后果。

  Moral evil is the result of ignorance.

  Tatoeba · sadhen CC BY

• 世界上只有两个东西是无限的，一为宇宙，一为人类的愚蠢，我所不能肯定的乃是前者。

  Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

  Tatoeba · sadhen CC BY