Sall
abbr. 自主语言学习（Self-access Language Learning）
🗣️ 情景例句
Yes. This is Richard Stewart.
是的。我是Richard Stewart。
What's the longest river in the United States?
在美国最长的河是什么？
When the dentist at last removed the cotton wool from my mouth,
当那位牙医最后将药棉从我嘴中取出时，