The start reaction time influences sprint result directly. Many athletes failed in sprint competition because they didn't start smoothly and their reaction time was too long.

起跑反应时直接影响短跑比赛成绩，在短跑比赛中有许多运动员由于起跑不顺利，反应时过长而导致比赛失利。

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Making the bulbs requires workers to handle mercury in either solid or liquid form because a small amount of the metal is put into each bulb to start the chemical reaction that creates light.

制造这些灯泡需要工人们直接处理固态或液态的水银，因为每个灯泡中要封入小量的该种金属用来发生化学反应以发光。

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Their reaction was silence. For all the considerable thought that went into creating the answers to these important questions, there was no start date.

夫妇俩沉默了，尽管这么多的想法能激发出答案，然而重要的是，它们都没有开始。

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It is heated to start the reaction, and when it is complete the resins, residual acetic anhydride and acetic acid are wicked away from the wood, and the pine has become Accoya.

BBC: Rice, straw and coconut the new alternatives to wood

One voice can start a chain reaction that changes the world.

FORBES: Reinhart and Rogoff; and The Dangers of Tipping Points, Real and Otherwise

And would lower taxes attract businesses and people across borders, as Scots might hope, and the English might fear, at least until they start cutting in reaction?

BBC: Mind the gap on the Northern Line