两个球

to ball───去舞会

no ball───失球

tar ball───n.原始码；（Linux下最方便的）打包工具

tea ball───滤茶球；茶包（等于teabag）

to bale───打包

to balk───工具栏

matzo ball───汤团

Every driving interface module could equally be driven by one or two ball leading screws.───每个驱动接口模块均可由一根或两根滚珠丝杠驱动。

Distribution medium for the latter two ball and change the flow of media.───后两种球阀用于分配介质与改变介质的流向。

Everything else being equal, in a parity situation, I'd probably choose the prettier of two ball cock valves.───如果在同等的条件下，我当然愿意在两个球形阀里面选一个最漂亮的。

On this particular turbocharger turbine wheel I used the inner races of two ball bearings to prevent the shaft from moving axially.───关于这一特定的涡轮增压器涡轮我用站内的两个球轴承，以防止轴轴向移动。

I do not know how old these two ball game players are. Can you tell me?───我不知道这两个球员多大年纪。你能告诉我吗？

Put two ball bearings in a circular track and spin this, and you soon find that the balls are opposite each other.───取两颗滚珠放在圆形轨道里旋转，不久你会发现两者位置相对。

T he side car is connected to main body with two ball couplings and to upper frame with two rods .───他一边连接到汽车的主体有两个球联轴器和框架上有两个燃料棒。

Some people enjoy football, while others like basketball. These two ball games are the most popular in China.───有些人喜欢足球，有些人喜欢篮球，这两项球类运动在中国都很流行。

On this particular turbocharger turbine wheel I used the inner races of two ball bearings to prevent the shaft from moving axially.