🗣️ 情景例句
I'm a senior here, so let me know if I can help you with anything.
我是大四的老生，有什么能帮忙的尽管说一声。
How much is a round-trip ticket to Beijing?
一张到北京的来回票要多少钱？
Can we substitute in these things?
这几项可以用替代品吗？