Only one defragment operation is allowed on a partition at a time.

在一个分区上，仅允许同时进行一个碎片整理操作。

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Sump pits are very common in Canada and if you have one it's a good time to test its' operation and install the discharge hose outside (away from your house of course).

集水坑在加拿大非常常见。如果你家有集水坑，现在需要检查一下其运行情况，在外面装上泄水软管(当然要在你家外面喽！)

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If you enter a number of resizing and moving operations into GParted and the operation fails, you can try entering just one operation at a time and then immediately clicking the Apply button.

如果您开始进行大量的调整以及将操作移到GParted的工作，而操作失败，那么您可以尝试一次只输入一个操作，然后立即单击Apply按钮。

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As for the little Syrian girl who has survived a war and now open-heart surgery, she will need one more operation in about a year's time as her body grows.

CNN: Taking heart amid Syria's carnage

We subtracted neither taxes on this income, which will presumably be sheltered by depreciation deductions, nor operating costs. (At any one time, Don Jr. has a half-dozen people helping him on the licensing operation.) But neither did we add for the potential from future deals not yet signed, the going concern value of the operation.

FORBES: How Much Is He Worth?

There are also guidelines requiring one-handed operation and a two second limit on "off-road glances" - the time spent looking at the device.

BBC: Hi-tech cars: Driver distraction warning in US