Ln
abbr. 自然对数（Napierian Logarithm）；液态氮（Liquid Nitrogen）
🗣️ 情景例句
Three cheers for Ms Li.
给李小姐三声欢呼！
Every man is best know to himself.
自己最了解自己。
Would you be kind enough to sign our visitors book?
请在来宾簿上签名好吗？