The two upper arms of the dummy can be either attcaks or defensive movements on the highline .The lower arm can be either a low strike or downward defensive action .是什么意思_The two upper arms of the dummy can be either attcaks or defensive movements on the highline .The lower arm can be either a low strike or downward defensive action .在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句