二に酸さん化か窒ちっ素そ

noun

nitrogen dioxide

Chemical compound NO₂; a reddish-brown toxic gas with a sharp odor, commonly found in air pollution.

• 二に酸さん化か窒ちっ素そは大た気いき汚お染せん物ぶっ質しつの一ひとつです。

  Nitrogen dioxide is one of the air pollutants.