n.圆周率，π，希腊字母表第16个字母
communication
n.交流，信息，通信
词根来自拉丁语communicare，表示分享共享、交流联系。
这是一个极其重要的单词，从高考开始都在各大考试大纲里。
发表在 English words
标签为 13 letters, CET4, TEM8, TOEFL, c-com, c-comm, e-ation, e-cation, e-communication, e-ication, e-ion, e-mmunication, e-munication, e-n, e-nication, e-ommunication, e-on, e-tion, e-unication, s-c, s-co, s-com, s-comm, s-commu, s-commun, s-communi, s-communic, s-communica, s-communicat, s-communicati, s-communicatio, s-communication, 考研, 高考
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disappointment
n.失望，令人失望的人或事
dis否定 + appoint安排 + ment状态结果
不满意安排的结果，即失望。
注意去掉前面表示否定的dis，后面的appointment是任命委任的意思，并不是失望的反义词。
intercommunication
发表在 English words
标签为 18 letters and above, c-inter, e-ation, e-cation, e-communication, e-ercommunication, e-ication, e-intercommunication, e-ion, e-mmunication, e-munication, e-n, e-nication, e-ntercommunication, e-ommunication, e-on, e-rcommunication, e-tercommunication, e-tion, e-unication, s-i, s-in, s-int, s-inte, s-inter, s-interc, s-interco, s-intercom, s-intercomm, s-intercommu, s-intercommun, s-intercommuni, s-intercommunic, s-intercommunica, s-intercommunicat, s-intercommunicati, s-intercommunicatio, s-intercommunication
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