I might have bought one textbook new during my entire university career (and that includes my time as a Masters student).
我可能在我的整个大学生涯里面确实买过几本新的课本。These four themes form the spine of my textbook and I shall elaborate upon them as I proceed today.
这四个词构成我的课本的主干，在我今天接下来的演讲中，我将对其详细阐释。One of them has reviewed much books and practiced many sample tests, almost as much as what she had planned at the beginning of the holiday.
一个复习了很多课本并且做了很多的练习题，几乎和她在假期前计划的一样多。She's always ready to help everyone, but she is forgetful. She always forgets to bring her textbooks, but our teachers always forgive her.
她时刻准备着要去帮助别人，不是她很健忘，她经常忘记带她的课本，不过我们老师常常原谅她。Since there was no textbook for the course, his students had to take detailed notes of everything the professor said.
由于这个课程没有课本，学生们只好详细记录教授的讲课内容。There is no basic text for the course due to the multidisciplinary nature of the topics covered.
由于主题囊括了多学科内容，因此这门课程没有基本的课本。I looked down at my book as soon as his eyes released me, trying to find my place.
他的眼睛刚放开我，我立刻低下头看着我的课本，试图找到老师正在讲的地方。and yet, hopefully, the cost of that isn't much more than the textbooks have been. So that's a big change.
而且很有希望的是，这些产品的价格不会高于（纸质）课本。那就是很大的变化。She used a telescope to read the blackboard and a magnifying glass for her textbooks.
她用望远镜看黑板，并用放大镜阅读课本。