Hello, everyone, I'm Sam from BBC Learning English, and today we're looking at different ways to use the word 'actually'. We use it to talk about what is true, like the word 'really'.

今日短语 Learning curve 是“学习曲线”，指“一个人学习新事物的进度”；steep 是“陡峭的”。 这两个词组合成“steep learning curve 陡峭的学习曲线”，也就是指 “短期内需掌握全新的知识”。