There are no planetary alignments in the next few decades, Earth will not cross the galactic plane in 2012, and even if these alignments were to occur, their effects on the Earth would be negligible.

在未来几十年没有行星直线排列问题，地球也不会在2012年跨越银河平面，即使出现此类排列方式，对地球的影响也可以忽略不计。

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Today, people easily cross the Atlantic Ocean by plane and cavalierly refer to the great body of water as "the pond."

时至今日，人们乘坐飞机能轻易的飞越大西洋，轻慢地对待这宏大的水体如“池塘”。

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Another way to do it, of course, would provide actually parametric equations of these lines, get vectors along them and then take the cross-product to get the normal vector to the plane.

当然也有另一种方法，就是用参数方程表示这两条直线，用两条直线的方向向量作外积，从而得到切平面的法向量。

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With a tandem jump you sign a release form, put on a jumpsuit and are quickly shown what to do once you leave the plane: how to cross your arms and bend your legs while in mid-air.

BBC: Falling into New Zealand, from 10,000 feet

Borschberg and Bertrand Piccard, Solar Impulse co-founder and chairman, said the plane should be ready for the cross-country journey on May 1, depending on the weather.

WSJ: Sun-powered plane completes California test flight

Like the time we found The Princess Diaries on both the outbound and return trips of another cross-country flight, which would be fine for a plane full of seventh graders, but not for grown-ups travelling on business.

FORBES: Skip The In-Flight Movie