...地面 0.18 图2为来自不同地面反射物的光谱曲线,从图可知,雪地(Snow)、白色的沙地(White sand)、干草地(Dry grass)的地面反射光谱较好,混凝土(concrete)次之,沥青(asphalt)较差。
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As wind in dry grass 好似干草地上的风
dry grass powder 干草粉
dry grass for hay 把青草晒成干草
fresh and dry grass 鲜草和干草
Watering the dry grass 干燥的草浇水
Dry grass Pictures umbrella 旱伞草图片
semi-dry deteriorated grass farm 半干旱退化草牧场
干草着火了。
A cigarette set the dry grass alight.
一支香烟把干草点燃了。
The little boy gave the dog some food, water and clean dry grass to lie on.
小男孩给了狗一些食物、水和干净的干草,让它躺在上面。
They were covered with snow. In their branches were pieces of dry grass and wood left by flood waters earlier in the year.
VOA: special.2010.05.01
The researchers were able to identify asbestos even in places eighty-percent covered by dry grass.
VOA: special.2009.11.17
An extremely dry summer killed the grass, and thousands more died of hunger.
VOA: special.2010.03.18
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