🧩 词语组成解析
lesson
['lɛsn]
n. 教训，训诫;功课;课程，一堂课;[宗]日课;
vt. 教训，训斥;教课;向…授课;
🗣️ 情景例句
Prices are always negotiable.
价钱总是可以商量的。
He is truly happy who makes others happy.
真正幸福的是使人幸福的人。
This ran on an 'operating system' called DOS, produced by a then small company named Microsoft.
这种电脑采用了一种被称为磁盘操作系统（DOS）的工作程序，而这种程序是由当时规模不大的微软公司生产的。