🧩 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;
n. 埃文河（英国西南部一河）；雅芳（化妆品品牌）
river
['rivə]
n. 河，江;溪，巨流;
🗣️ 情景例句
He's a very famous person in Chinatown. He's also from your home city, Peking.
他在唐人街大名鼎鼎，他也是从你的家乡北京来的。
It is a mistake to trust him.
信任他是个错误。
Work on it had begun before my sister left.
这栋房子在我姐姐离开之前就已动工了，