within striking distance idiom
距离很近
near
We live within striking distance of both Baltimore and Washington. 我们家离巴尔的摩和华盛顿都很近。
近在咫尺；唾手可得
very near to getting or achieving something
His victory in the Brazilian Grand Prix puts him within striking distance of the world championship. 他在巴西汽车大奖赛上获胜，使他距离世界冠军只有一步之遥。