threeleveladj.三级的
threenum.三n.三;三个adj.三个的
three methods of transmission三化
three people basketball match三人篮球赛
three tank alternating system三池交替工艺
three coordinates measurement三坐标测量
three dimensional coordinates三维坐标
three-phase four core cable三相四芯电缆
three transfer parallel robot三平移并联机器人
three hundred and eighty nine(=389) 三百八十九
three thousand and twenty one(=3021) 三千零二十一