BT是什么意思

{"name":"BT\u662f\u4ec0\u4e48\u610f\u601d","type":"\u6297\u65e5\u5267","area":"\u52a0\u62ff\u5927","year":"2009","lang":"\u6cd5\u8bed","play":"\u9ad8\u6e05\u4e2d\u5b571080P","type1":"\u6297\u65e5\u5267"}