The heavy traffic tinctures the air with carbon monoxide.

繁忙的交通使空气里充满一氧。

Qualified nickelous, sulfate, nickelous nitrate and nikel monoxide were prepared with waste raney nickel catalyst as raw material.

雷尼镍催剂为原料，制备出合格的酸镍、硝酸镍和氧镍。