The device includes a small, adjustable controller box, and a battery pack, lasting 8 hours between recharges, which is worn at the waist or carried in a small shoulder bag.是什么意思_The device includes a small, adjustable controller box, and a battery pack, lasting 8 hours between recharges, which is worn at the waist or carried in a small shoulder bag.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句