(每日一词）carapace

Carapace  /ˈker.ə.peɪs/ n. （动物的）壳，甲壳

meaning: a hard shell that covers and protects animals such as crabs and turtles 

1) 联想：car- 汽车 —(s)pace  空间

2) 联系：像创造汽车空间的那个外面的壳

e.g. The arrogance became his protective carapace. 傲慢的态度成了他的保护壳。