Question

dictionary查询是否有相同的key

Answer 1

dictionary 英[ˈdɪkʃənri] 美[ˈdɪkʃəneri]
n. 词典，字典; [自] 代码字典;
[网络] 词典; 字典,词典; 查字典;
[例句]He always carries a small dictionary in his pocket.
他口袋里总是带着一本小词典。