/ɪkˈstɪəriə(r) ||; ɪkˈstɪrɪɚ/noun [C] the outside of sth; the appearance of sb/sth 外部；外面；外表:
The exterior of the house is fine but inside it isn't in very good condition. 这房子外表还可以，里面却不太好。Despite his calm exterior, Steve suffers badly from stress. 斯蒂夫尽管表面上很镇静，心里却紧张得要命。