🧩 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 know.
我知道。
One father is more than a hundred school-masters.
一个父亲胜于一百个教师。
The problem now facing humanity is: What is going to be done with all this knowledge?
用这些知识去做什么？