The codes—which typically range in price from $80 to $155 per course—give students online access to systems developed by education companies like McGraw Hill and Pearson.

这些访问码的价格通常在每门课程80美元到155美元之间不等，学生需要通过这些访问码才能在线使用麦格劳·希尔和培生等教育公司开发的系统。

youdao

Books can be expensive, even hundreds of dollars per course.

课本可能会很贵，每门课程甚至会花费几百美元。

youdao

Methods: MTX at a high dose ranging from 1.0 to 3.0 g per course was intravenously administered to 30 patients with malignant tumors.

方法采用反相高效液相色谱法对30例肿瘤患者静脉滴入MTX（1．0-3．0／次）后的脑脊液和血浆中MTX浓度进行连续测定。

youdao

But the two others axis, per the syllabus that we'll explore in great detail in the course and also these are the axis along with which we'll evaluate your submissions are design, in other words how well implemented is this?

但是另外两个中心线，按照教学大纲我们将探究,课程中格外的一些细节,这些中心线是跟,我们评估你们的设计论文是一致的，换句话说，这个执行得怎么样？

哈佛公开课 - 计算机科学课程节选

So how do we get you from for many of you zero to 60 miles per hour after just 11 weeks, well like many courses here is the course structured around not only lectures for conceptual introductions, but sections, office hours and walkthroughs.

十一周后,很多人每小时都能知道60公里内发生的事情，就像这里的很多课程一样,这个课程不只有概念性的介绍，也包括上机和演练讲座。

哈佛公开课 - 计算机科学课程节选

And this is a very fast speed, of course, it's about 700 million miles per hour. So, one way to put that in perspective is to think about how long it takes for a light beam to get from earth to the moon. Does anyone have any guesses? Eight seconds, that sounds good.

当然这是一个非常快的速度，它大约是每小时7亿英里,为了更形象化，我们,看看光从地球到月球,需要多少时间，你们猜猜是多少？,8秒，猜的不错。

麻省理工公开课 - 化学原理课程节选

Karen Hawkes said the company enrolls 10 to 15 people per course and had open spots for this summer's courses.

CNN: Winged luxury submarines 'fly' underwater

The process of turning 18 holes into an immersive digital experience begins by shooting up to 300, 000 photos with high-definition and laser cameras, on land and from a helicopter and plane, each picture attached to an exact location using GPS. Imaging can take two to three weeks and cost hundreds of thousands of dollars per course.

FORBES: How To Beat Tiger Woods

Gidleigh has no golf course per se, but the 18-hole putting course is one of the prettiest anywhere--with lily ponds and clusters of azaleas--and the property has enough allure in itself to keep a guest happily on the grounds for a weekend.

FORBES: Weekend in the Country