大多数数学书假定读者为：他们有一定程度的基础，已经有一个确定的“数学基础”等等。
Most math books are written with assumptions about the audience: that they know certain things, that they have a certain level of "mathematical maturity," etc.
他们也喜欢跟数数、字母表、形状和尺寸、动物或卡车有关的书，还有那些教他们说你好和再见的书。
They also like books about counting, the alphabet, shapes and sizes, animals or trucks and books about saying hello and goodbye.
应用推荐