Erh
abbr. 平衡相对湿度（equilibrium relative humidity）
🗣️ 情景例句
Shantou is a boom town, it's a haven for the manufacturing industry.
汕头是一个新兴的城市，是制造业的港湾。
Misfortunes test the sincerity of friends.
患难见友情。
Born a free man, he was now in chains.
他生来本是个自由人，如今却戴上了镣铐。