如果人物在五英尺内，可使用充分闪光模式，在五英尺外，则需要使用完全闪光模式。
If the person is within five feet, use the fill-flash mode; beyond five feet, the full-power mode may be required.
但是，当他举起了闪光灯照房子时，那房子已经完全浸入水中了。
But when he held his flash light to the house, it was already completely under water.
人类透过摄影师的闪光灯所见到的，可能跟珊瑚礁生物的眼睛透过自然光所见完全不同。
What humans see lighted by a photographer's bright strobe may look altogether different in natural light through the eyes of reef creatures.
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