One switch can add 15 minutes to the overall procedure. Change again, and that's a 30 minute extension.

对于整个治疗规程来说，一次更换需要增加15分钟的时间，再次更换则延长到30分钟。

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Installing a Chrome or Firefox extension is a one-minute process in most cases and affords the user protection against a variety of threats.

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As 2011 drew to a close and the sun was due to set on the payroll tax cut, Congress did what it does best, agreeing to a last-minute, ill-conceived two-month extension that was not offset with any increased revenue or spending cuts.

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