We should not set light by the advice of our seniors.

对于长辈的规劝， 我们不应轻视。

This is indicated by the light bulb when the cursor is set to the field.

当光标进入该字段时，此功能通过电灯泡图标来指示。

These clocks are sometimes set by the number of hours of light or darkness in a day, by the rhythm of the tides or by the seasons.

这些时钟有时根据一天中白昼或黑夜的小时数目设定，有时根据潮汐的规律或者季节设定。

After a century as a primary source of artificial light these energy-guzzling bulbs are set to be replaced by light-emitting diodes (LEDs), powered by semiconductors.

在过去的一个世纪中，白炽灯泡一直为人造灯源的基本产品；但现在，耗能惊人的白炽灯泡注定将被由半导体驱动的发光二极管(LED)所替代。

After a period determined by the set shutter speed, the rear curtain now drops to close the camera to light and end the exposure.

度过由快门速度设置的曝光时间后，后幕帘落下闭合，曝光停止。