额外试验：让你的朋友站在阴影里然后打开闪光灯试试！
Bonus experiment: Stand your friend in the shade and pop up your flash!
在晴朗的天气拍摄人物照片时，可打开闪光灯。
When taking people pictures on sunny days, turn your flash on.
当打开闪光灯时，它所发出的亮光穿透红宝石。
When the flash tube is triggered, light from it penetrates the ruby.
可以打开闪光灯。
打开闪光灯。
所以我只好打开闪光灯，拿起我的书，沿着路往下走去学校。
So I put my flashers on, grabbed my books, and marched down the road to the college.
如果你需要用闪光灯的话，把两部相机的闪光灯都打开，做好准备拍出的照片可能有点怪。
If you need to use flash, turn on the flashes for both cameras and expect things to come out a little weird.
凭借让照相机快门打开时间延长，通常超过1分钟，就能使用发光二极管、闪光灯，乃至闪光物体绘出光线踪迹。
By having a camera's shutter open for extended periods of time, often well over a minute, trails of light can be drawn with LEDs, flashlights, or even sparklers.
但现在太阳要落山了，我想还是把闪光灯打开吧。
But the sun is setting. I think it is better to open the flash for supplying light.
但现在太阳要落山了，我想还是把闪光灯打开吧。
But the sun is setting. I think it is better to open the flash for supplying light.
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