🧩 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
Hi, Michelle.
嗨， Michelle。
You can never tell.
不知道。
Because of this, they were known as 'prizefighters'.
因此，他们被称作“职业拳击手”。