To eliminate this effect, you can place a small piece of opaque material or black foam just long enough to block the direct part of the light from hitting your subject.

为了消除这种效果，可以在闪光灯灯头上加一片不透明材料或黑色塑料泡沫板做的遮光片，以阻挡扩散的光线照射到被摄体。

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The boots were made from a pair of old shoes that I glued to a four inch thick block of foam, then cut around the soles of the shoes and covered the entire boot with sheet styrene.

鞋子是用一双旧靴子做的，我把它用胶水粘到一块四英寸厚的泡沫塑料上，然后沿鞋底割下来，再在整只靴子上涂上一层苯乙烯。

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The foam concrete block was prepared by self-made compound protein foam agent.

以自制复合型蛋白质为发泡剂，制备泡沫混凝土砌块。

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Plastic foam cups that keep drinks hot would also be on the chopping block if Bloomberg's citywide ban becomes law.

WSJ: New Yorkers react to mayor's plastic foam ban push