You can inadvertently render a directory unusable if you remove its execute bits, say with chmod -R a-x.

如果删除了目录的执行位，比如 chmod -R a-x，您可能会使得一个目录变得不可使用。 为了更具选择性，可以使用 find .

youdao

The Virtual Classroom makes these tests more efficient, Rizzo says. In one experiment, he gave a group of kids the classic "A-X" test.

虚拟教室让这些测试变得更有效率，Rizzo说，在一项试验中，他给一组孩子们做经典的“A-X”测试。

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Let x be the sum of a and b.

设x为a加b之和。

《牛津词典》

It carried the man who became the first human to step on the moon, Neil Armstrong, a former X-15 pilot.

VOA: special.2010.07.07

Remember, we don't do a one-to-one correlation, because p x and p y are some linear combination of the m plus 1 and m minus 1 orbital.

记住，我们不需要把它们一一对应，因为ｐｘ和ｐｙ轨道是,ｍ等于正负１轨道的线性组合。

麻省理工公开课 - 化学原理课程节选

The highest probability now is going to be along the x-axis, so that means we're going to have a positive wave function every place where x is positive.

概率最高的地方是沿着ｘ轴，这意味着只要在ｘ,大于零的地方波函数都是正的。

麻省理工公开课 - 化学原理课程节选

Sharp announced that it will be producing three panel varieties with IGZO technology: a 10-inch LCD panel with 2560 x 1600 pixels, a 7-inch panel with 1280 x 800 pixels and a 32-inch panel with 3840 x 2160 pixels.

ENGADGET: Sharp's IGZO low-power, high-res display technology gets its time to shine at IFA

Butter a 10-x-4-inch tube pan with a removable bottom.

NPR: Two Centuries of 'Baking in America'

Now, a team of researchers from AGFA-Gevaert, IMEC, Holst Centre and Philips have prototyped a 12- x 12-centimeter flexible OLED lighting panel that swaps out the ITO for highly-conductive transparent resin electrodes.

ENGADGET: Resin replaces ITO in latest flexible OLED prototype