A muted NATO response to extensive Russian military exercises on the Baltic and Polish borders last autumn sharpened the worries further.

而北约对于去年秋季俄罗斯在波罗的海各国和波兰边境上的大规模军事演习则进一步加深了人们的担忧。

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In Part 2, I'll take these simple exercises much further; for now, just focus on the basic steps involved.

在第2部分中，我将在这些简单练习上再进一步。但是现在，只需把注意力放在包含的基本步骤上。

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Further, since these exercises are the first of their kind, you may find the suspension of judgment in connection with thoughts particularly difficult.

此外，由于这些练习仍属于一个起步，你可能会觉得要放下与想法形影不离的判断，感到特别困难。

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Further exercises are planned, U.S. officials say.

CNN: STORY HIGHLIGHTS

On Thursday, a spokesman for the South Korean Defence Ministry, Kim Min-seok, said Pyongyang had been observed carrying out "various drills involving the army, navy and air force, " and that further exercises were being prepared, the Yonhap news agency reports.

BBC: North Korea ramps up nuclear rhetoric as UN vote looms

But dialogue on Korean peninsula security, including the issue of military exercises, could help prevent further misunderstanding and miscalculation.

BBC: Viewpoint: What is driving North Korea's threats?