4. the first part of the first word the first part of the second word psywar: psychological warfare 心里战 Amerind: American Indian 美洲印第安人 memon: memorandum conversation 谈话记录psywar: psychological + warfare 心里战 Amerind: American + Indian 美洲印第安人 memcon: memorandum + conversation 谈话记录 4. the first part of the first word + the first part of the second word: