He gained several more hundredths of a second in the third run Saturday, so with a total lead of almost half a second, Holcomb just needed to steer a solid run on his fourth and final trip down the icy course.

VOA: standard.2010.02.28

two or two and a half lectures, where I am going to be talking about the basic premises of this course.

两节或两节半课，我将会谈到,本课程的基本前提。

哈佛公开课 - 幸福课课程节选

We'll get to oxidation number in the second half of this course, but it's not in any way the same idea as formal charge.

我们会在课程的后半部分讲到氧化数，但它和形式电荷完全不是同一个概念。

麻省理工公开课 - 化学原理课程节选

When built, half the course was inside the infield of the oval of the Indianapolis Motor Speedway, aka the Brickyard, home to the Indy 500.

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Get ahead at least half the course outline.

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Harry, third in line to the British throne, will now begin a two-and-a-half year course with the Army Air Corps in January 2009, that could result in him seeing active service as a pilot, according to a press statement.

CNN: Prince Harry to train as military pilot