It is always perilous to neglect our national defense.

忽视国防始终都是险。

And the next layer is just as perilous: The photosphere.

而下层也同样险：光球。

Together, these developments point to a perilous period ahead.

综合起来，这些发展标明个险将来。

But we are entering really perilous and uncharted waters.

但现在玻利维亚处于险且未知局面。

These islands are at a perilous crossroads.

这些岛屿正处于险十字路口。

Only philosophers embark on this perilous expedition to the outermost reaches of language and existence.

唯有哲学家才会踏上险旅，语言与存在所能达到顶峰。

A perilous rescue effort is still underway.

险救援工作仍在进行中。

Yet it is bold precisely because it is perilous.

然而，这次行动正是因为险，所以才称得上大胆。

You could replace it with perilous.

你可以用 perilous 来代替。

Moving from tree to tree is a perilous business.

在树间跳跃穿梭十分险。

On the Republican side, the politics are more perilous.

在共和党方面，政治则更险。

As a newly appointed chief executive at a Fortune 500 company, a thrilling yet perilous adventure awaits you.

作为家财富500强公司新任首席执行官，场刺激又险冒险之旅正等着你。

Buffalo journalist Nick Veronica told the BBC, the situation remains perilous.

布法罗记者尼克·维罗尼卡告诉BBC，情况依然很险。

The concern is that incidents like this could create a perilous miscalculation.

目前外界担心是，这类事件可能会导致险误判。

From there they will embark on perilous Journeys hoping to reach Europe.

从那里，他们将踏上险旅，希望到达欧洲。

And driving through on a highway would likely remain a perilous journey.

在那里公路上开车可能仍然是段险旅。

This has to be the most perilous school run in the world.

这定是全世界最险求学之路。

The mountainous conditions are known for quickly-changing weather and perilous flying conditions.

山区条件以快速变化天气和险飞行条件而闻名。

If negotiations in Congress take weeks, that could prove perilous for Ukraine.

如果国会谈判持续数周，这对乌克兰来说可能是险。

They undertake this perilous journey for food.

他们肩负着这趟涉险寻食之旅。