Ballat巴拉
balln.球;球状物;炮弹;舞会;愉快的经历;<口>胆量;胡说;(复)睾丸v.使成球状;呈球状;<俚>性交
ball possession控球
balled planting再包土栽植
ball stop valve球形止阀
ball grid array球栅阵列
ballscrew drive球螺杆传动
ball type valve球形阀
ball and spigotadj.球塞式的
ball cock washer球阀垫片
ball familiarity球性
ball-point nib球形笔尖