关于trip off the line找到的一个有趣的解释? The place where electricity is produced is a power plant. When it is producing electricity it is on line, and when it isn't it is off line. The safety switches in a house's electricity board are called trip-switches, itf there is a faulty device or a surge in the power one of them will 'trip' from on to off, shutting off power to either the whole house or to the socket in question. Any safety device which works in the power station would be referred to as "tripping" in the media to ensure that it was understood by readers/viewers. There was too much demand for power at the power plant and it went off line as a safety precaution. 刚才看 有朋友 发贴问turbine trip的问题,于是上网搜索,没想到在一个网站上找到上述解释,很通俗易懂。 http://forum.wordreference.com/showthread.php?t=194953 原文地址查看更多2个回答 . 4人已关注