a thing or two

Phrase

A considerable amount; a lot.

Japanese Meaning

かなりの量 / 相当な数や量のもの

She taught him a thing or two about negotiation during the conference.

彼女は会議で交渉について彼にかなりのことを教えた。

Sense（1）

A considerable amount; a lot.

He's a good mechanic, and surely knows a thing or two about car engines.

a thing

（ canonical ）

two

（ canonical ）