你为什么认为数学书有那样的数学题呢？
Why do you think that math books have so math problems?
艾米把数学书落在家了。
Amy had left her math book at home.
我正找我的'数学书，我找不到了。
I am reading a very interesting book, which is about mathematics.
English book, Chinese book, math book
昨天查了数学书：截距一定是正的，它是某一轴上坐标的绝对值。
Distance: The length or numerical value of a straight line or curve.
