🧩 词语组成解析
upper
['ʌpə]
adj. 地位较高的;上面的;内地的;地表层的;
n. 鞋帮,靴面;兴奋剂;令人兴奋的经历;
🗣️ 情景例句
I feel that too many people worry about how they look.
我感觉太多的人关注他们的外表。
Can you keep an eye on my bag?
帮我看一下包好吗?
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。