ball-bearing
ball-cartridge ball-cock ball game ball point mouse ball-point pen ball printer ball-proof ball-room ballad ballad-monger ballade balladic ballast ballast resistor ballastron ballboy ballcock ballerina ballet ballet-dancer balletic balletomane balletomania ballgirl ballista ballistic ballistic method ballistic missile ballistician |
ball-bearing /'bɔ:l'beəriɳ/
danh từ
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