Ln
abbr. 自然对数（Napierian Logarithm）；液态氮（Liquid Nitrogen）
🗣️ 情景例句
Susan, I understand you're in the toy business. Susan
听说 ，是在玩具业工作。
Her husband doesn't think she should continue working after the baby is born.
她的丈夫认为女人生了孩子就不应该再继续出去工作了。
She intends to make teaching her profession.
她想以教书为职业。