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[word-lover] 【整理】2015-07-27 How to Use a Word

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[Homework]2015-07-27 How to Use a Word
Today's word is yaw, spelled y-a-w.
Yaw is a verb when used of a ship, it means a deviate erratically from a course as when struck by a heavy sea; especially move from side to side. When used of an airplane, spacecraft or projectile, it means to turn angular motion about the vertical axis. Yaw can also mean to alternate.

Here is the use of the word by Steve Wines in Medium.com: in 2002, contractors explored the wreck using a remotely operate submarine. They found ropes and lights from previous visits, and worked out how the big plane skipped and yawed across the water before sinking to the bottom.
In the heyday of the large sailing ships, numerous nautical words appeared on the horizon, many of which have origins that never have been chased. Yaw is one such word. It began showing up in print in the 1500s century. First as a noun meaning movement off course or side to side movement, and then as a verb. For more than 350 years it remained a sailing word, with occasional side trips to the figurative scene to alternate. then dawned the era of airplane flight in the early 20th century and yawing was no longer confined to the sea. Nowadays people who love boats still use yaw much as the sailors of old did but pilots and astronauts also refer to the yawing to their crafts.
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