还有就是鱼儿可以自己调节体色的深浅，以此传达欣赏、赞同或害怕等信号。
What is more, fish can either brighten or darken their hues and in this way they express appreciation and aggression or fear correspondent.
把原材料都切成厚片之后，鹅卵石就会呈现出各种形状和深浅不同的自然色。
After cutting the material into slabs, the pebbles come to light in various sizes and different shades of natural colours.
深深浅浅，勾画伞下的丁香愁怨，一回眸，就迷失在黛色的瓦檐。
Deep and shallow, cloves Chou Yuan outlined under the umbrella, a look back, they lost in the Dai-colored tile eaves.
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