If it wants to have a smooth texture, it flattens out the papillae, so it can acquire a smooth texture to blend in with the sandy bottom of the sea.
如果它想要纹理光滑一些，它就把身上的“触头”变得平整，这样它看上去就会很光滑，能够融入海底的沙地中。
The sea was as smooth as glass.
大海平静得像一面镜子。
A smooth sea never made a skillful mariner.
平静的大海决不能造就出熟练的水手。
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