sixten.第六式的防卫姿势sixnum.六six pulse conditions六脉six-toothed wether三岁阉公羊six - nation talks六方会谈six wheel locomotive六轮机车six months over spot六个月现汇价, 六个月现行价Six minute walk test6min步行试验six thousand and six(=6006) 六千零六six-light-screen六光幕six-month rotations6个月一轮换Six-axes locomotive六轴机车