你有一些数学书吗？
I have some math books. They are my best friends.
我有些数学书，它们是我最好的朋友。
She'd always buy me extra math books to do at home.
她总是给我买额外的数学书在家里做。
Why do you think that math books have so math problems?
你为什么认为数学书有那样的数学题呢？
In math, online books tend to render formulas badly.
在数学领域，网络图书会把方程序弄得一团糟。
An English book, a Chinese book, a math book, a notebook and 10 story-books.
一本英语书，一本中文图书、数学书，笔记本和10本故事书。
An English book, a Chinese book, a math book, a notebook and two story-books.
一本英语书，一本语文书，一本数学书，一个笔记本和两本故事书。
These math text books and work books are highly activity-based.
这些数学课本和练习册的工作是高度以活动为基础的。
These math text books and work books are highly activity-based.
这些数学课本和练习册的工作是高度以活动为基础的。
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