These jellies are almost transparent: the best way to spot them is to look for their shadows on the ocean floor.
这些水母几乎是透明的：发现它们最好的方法是寻找海床上的阴影。
Transparent objects don't cast or receive shadows. Transparent Cutout objects do cast and receive shadows.
透明物体不投射或接收阴影。透明抠图物体能投射和接收阴影。
Aquarelle is affluent and sprightly so that it is so suitable to express the lights, shadows, and colors of atmosphere with ample and transparent layers, which other materials cannot compare to.
水彩具有流畅、明快的特性，很适合表现大气的光影与色彩，丰富而透明的层次是其他媒材所不能及。
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