black ball meaning in English
黑球
秘密反对票
Examples
- Cat furry black ball . torn strip of envelope
猫蜷缩成一团毛茸茸的黑球。 - A black ball is tied to the other end of the green cord
藉由一条绿色轻绳（质量忽略不计）下方挂黑色球, - Hoist lower one black ball , please
请在前桅升起中国旗 - Please use blue or black ball pen and complete the form in block letters
请以?色或黑色原子笔及正楷填写此表格。 - The size ( mass ) of black ball will change to keep the system in equilibrium
（或黑球的上下位置）由于红球仅受到向心力