他们在房间中不使用百叶窗。窗帘不能充分的遮蔽阳光。
They do not use blinds in their houses and the curtains do not fully protect from the sunlight.
月球没有大气层，因而能充分接受阳光照射，有丰富的太阳能可供利用。
The Moon, which lacks an atmosphere, receives abundant, energy from the Sun.
视网膜刺激-给自己一个充分的理由，到户外刺激视网膜，，每天15分钟，与阳光充分接触。
RETINAL STIMULATION - make it a point to go outside and stimulate your retinas (eyes) for about 15 minutes a day with sunlight.
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