🧩 词语组成解析
鲁尔(联邦德国一地区)
river
['rivə]
n. 河，江;溪，巨流;
🗣️ 情景例句
Yes? Can I do something for you?
什么事？我能为您效劳吗？
Which one is cheaper?
哪一个是较便宜的？
You've made a good choice.
你的眼力不错。