The experiment has proved that it may inprove accuracy of measurement greatly to design reasonably concentrated ball collar-the critical nart of manufacturing core shaft.
经过实践证明，合理设计芯轴的制造关键部分———密珠套，可以大大地提高测量精。
Watching Sam taunt Lucky in human form with a ball, or laugh at his collar, was just funny – even if you do have a soul.
看着Sam讥讽人类形态的Lucky叼着个球或是嘲笑Lucky的领子实在是很有意思——就好像Sam自己有灵魂似的。
You'll need a collar and a four - or six-foot lead to match the size of the dog. Also bring a tennis ball, a plush toy, and liver or chicken treats.
带一个项圈和一根四到六英尺的牵狗绳去选狗，同时也可以带上一个网球、一个玩具和一些狗食。
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