Being odorless, colorless, tasteless, and non-irritating, nitrogen has no warning properties.

由于无嗅、无色、无味、无刺激性，氮没有警告性特征。

youdao

Being odorless, colorless, tasteless, and non-irritating, nitrogen has no warning properties.

由于无嗅、无色、无味、无刺激性，氮没有警告性特征。

youdao