What people must remember is that one hive quickly becomes two, two become four and four become eight.

人们一定要记住的是，一个蜂巢很快会变成两个，两个变成四个，四个变成八个。

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Simulation results in two-area four-machine proves that power system stabilizer under this strategy has stronger capacity of checking shocks and becomes stable more quickly.

二区域四机的仿真结果证明施加这种控制策略的电力系统稳定器抑制振荡能力更强，进入稳态时间更短。

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World number two Federer becomes only the sixth man to have won each of the four Grand Slam tournaments.

BBC: Federer claims historic Paris win

The 43-year-old has been out of work for four months since he left League Two Port Vale and takes over from John Deacy, who becomes assistant manager.

BBC: Sinnott named Park Avenue manager