严阵以待的地方警察和州警察集结在校园中。
Heavily armed local and state police officers swarmed onto campus.
记住，你需要严阵以待的是竞争——而不是你自己。
Remember, take your competition seriously - but not yourself.
在众多竞争者严阵以待的形势下，充电式汽车成了今年底特律车展的主角。
With several competitors waiting in the wings, plug-ins were the focus of this year's Detroit Auto Show.
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