Not to be deleted or altered in regular use.

正常使用时不能删除或更改。

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Some alternative calendars in regular use include.

一些常规的可选择的日历包括。

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The technique has been in regular use in the conventional oil and gas industry since the 1940s;

自19世纪40年代起科学技术已经普遍应用于普通油和天然气工业了；

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This became more common in the 1920s, and especially during the Bretton Woods period, but it was in regular use pre-1914 as well.

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In the end, however, the testers say besides being "extremely hot" after coming out of the sauna, the system is running fine and back in regular use.

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Physically, the XV6900 is just ever-so-slightly larger than its GSM cousin -- not enough for the average person to ever notice in the course of regular use -- and the addition of 3G data is more than enough to make up for that slight difference as far as we're concerned.

ENGADGET: Verizon XV6900 hands-on Mobile