虽然我们也可以说 “I learned about the Pythagoras theorem today”，但这样表达出来的意思就不是 “我今天学会了勾股定理”，而是 “我今天了解了一些和勾股定理相关的知识”。 Georgie And if you have a question that you'd like us to answer, you can email us too at: ...