carapace /ˈkærəˌpeɪs/

• 1. 

  N-COUNT A carapace is the protective shell on the back of some animals such as tortoises or crabs. (龟、蟹等的)甲壳 [正式]

• 2. 

  N-COUNT You can refer to an attitude that someone has in order to protect themselves as their carapace. 保护壳 [文学性] [usu with supp]

  例：

  The arrogance became his protective carapace.

  傲慢成了他的保护壳。