「一對一教學」是one-to-one teaching還是one-by-one teaching? 1. 在美語裡「一對一教學」是one-on-one teaching，英式英語會說one-to-one teaching ... ... <看更多>

One -on- one 和 One by one ，哪一個英文片語才算正確呢? 答案是: 這要看你想表達的意思是什麼! 雖然兩者的意思不同，可是仍然有很多學生把兩個搞混， ... ... <看更多>

Let X be a set. Define a map d: X -> X*X by d(x) = (x,x). a) Is d one-to-one? Prove or disprove. b) Is d onto? Prove or disprove. ... <看更多>