crustaceous

• 过时形容词，指具有坚硬外壳或硬皮的，常用于动物学语境中描述甲壳类动物。

An obsolete adjective meaning having a hard shell or crust, typically used in zoological contexts to describe crustaceans.

1. Relating to crustaceansC2formalscientific

   Of or belonging to the class Crustacea, which includes animals like crabs, lobsters, and shrimp.

   甲壳类的

   • The biologist studied the crustaceous species found in the deep ocean.
   • Crustaceous animals have a hard exoskeleton that protects their bodies.
   • Many crustaceous creatures are vital to marine ecosystems.

   同义词crustacean

2. Having a hard shellC2formalscientific

   Being, having, or resembling a hard crust or shell.

   有硬壳的

   • The fossil had a crustaceous exterior that preserved its shape.
   • Some insects have a crustaceous covering that shields them from predators.
   • The rock formation had a crustaceous texture, like ancient shell deposits.

   同义词crustyhard-shelledshelledtestaceous