乃是

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

to be / thus / so / therefore / then / only / thereupon

variant of 乃[nai3]

variant of 是[shi4] / (used in given names)

to be (followed by substantives only) / correct; right; true / (respectful acknowledgement of a command) very well / (adverb for emphatic assertion)