这种测试需要高度专业化的技能和装备，以便最优化地进行。
This testing requires highly specialized skills and equipment in order to be optimally performed.
不过这还不是专业摄影师在棒球赛中使用的唯一装备。
But that's not the only equipment the pro USES at a baseball game.
我 们不能不讨论一下在棒球赛中专业摄影师们所使用的装备。
We can't leave this topic without discussing what the pro uses at a baseball game.
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