一旦摆脱了捕食压力，大体型对食草动物来说几乎没有优势。
Once rid of predation pressure, large body size is of little advantage to herbivores.
由于捕食压力，特别是作为取鱼翅的牺牲品，锤头双髻鲨的生存受到威胁。
The scalloped hammerhead is under threat due to fishing pressures and in particular is a victim of shark finning.
一旦摆脱了捕食的压力，巨大的体型对食草动物没有什么好处。
Once free from predation pressure, large body size is of little advantage to herbivores.
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