双语例句
Ammonia gas NH 3 is colorless which can turn wet red litmus paper to blue.
氨气是无色的,它可把湿的红色石蕊试纸变成蓝色.
词典释义：
red litmus paper
时间: 2026-05-02 03:08:51
红色石蕊试纸
词典释义：
红色石蕊试纸
Ammonia gas NH 3 is colorless which can turn wet red litmus paper to blue.
氨气是无色的,它可把湿的红色石蕊试纸变成蓝色.