The charger is usually plugged into the mains, but if armed with a battery it can be carried around for hours in a vest or backpack, thus allowing the patient to roam freely.
平常，充电器与人造心脏相联接(以供电)，但如果病人配备有电池，可以将电池随身携带在背心或背包内，从而使病人能够自由活动。
The Omaha World-Herald reported that the gunman had a military-style haircut and a black backpack, and wore a camouflage vest.
奥马哈世界宣布报道，枪手有军事样式理发和一个黑背包，和穿了伪装背心。
The invention relates to a backpack which can indicate direction and comprises a bag and a simplified and vest-shaped bag.
本发明涉及一种能指示方向的背包，包括书包和简化成背心状的。
The invention relates to a backpack which can indicate direction and comprises a bag and a simplified and vest-shaped bag.
本发明涉及一种能指示方向的背包，包括书包和简化成背心状的。
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