That was my reaction when I first began training with Brew, my nine-month old Australian Cattle Dog.

那是我刚开始训练我九个月大的澳洲牧牛犬时的反应。

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What was particularly interesting was that the faster reaction times of the video gamers could be acquired by non-video gamers in 50 hours of training over a few weeks.

尤其有趣的是，游戏玩家更加迅速的反应可以通过几周超过50个小时的训练习得。

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The aim of the speed training is to attain quick reaction, flexible action and graceful step.

快速的反应、灵巧的动作、飘逸的步伐，是散手速度训练的目标。

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Last week we believed Kelly would be able to make it but she suffered a reaction in a crucial training session on Monday morning and has made the decision to pull out.

BBC: Tomlinson added to GB injury list

The attacking midfielder had maintained hopes of playing in London until Tuesday, when he managed an hour of training in his first full session since April until an adverse reaction curtailed his dream -- and so perhaps his chances of repairing his damaged relationship with some fans.

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That puts an onus on training, military exercises, and making sure the NATO Response Force, which is meant to provide rapid-reaction forces for deployment at short notice, is up to the job.

WSJ: For Europe's Defense Establishment, a Moment of Truth on Defense