Erh
abbr. 平衡相对湿度（equilibrium relative humidity）
🗣️ 情景例句
About the quality of 500 cartons of tin food we ordered last time.
是关于我们上次定购的500箱罐头食品的质量问题。
Thank you. Here's $10:00. Keep the change.
谢谢你。这是10美元，不用找了。
Mr and Mrs Shute were very sad. But what could they do?
舒特先生和夫人非常难过。但他们有什么办法呢？