The relieve a sick or injured person of this machine, use at relieve a sick or injured person of urgent medical treatment, the BK117 that replaces production of former MBB company helicopter.是什么意思_The relieve a sick or injured person of this machine, use at relieve a sick or injured person of urgent medical treatment, the BK117 that replaces production of former MBB company helicopter.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句