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单词	octagonal
释义	octagonoctagon /ˈɑktəˌgɑn/ noun [countable] Etymology ETYMOLOGYoctagon Origin: 1500-1600 Latin octagonum, from Greek, from okta- eight + -gonon -gon math, geometry a flat shape with eight sides—octagonal /ɑkˈtægənl/ adjective:  an octagonal room
随便看	troposphere trot troth Trotskyite Trotsky, Leon troubadour trouble troubled trouble-free troublemaker troubleshoot troubleshooter troubleshooting troublesome trouble spot trough trounce troupe trouper trouser trousers trousseau trout trove trowel

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