We watched the explosion from a safe distance.

我们在安全距离之外观看了爆破。

I shall conceal myself at a safe distance from the battlefield.

我将把自己藏在一个远离战场的安全地带。

Keep a safe distance between cars.

车与车之间要保持安全的距离。

Model suggests how protoplanets kept a safe distance from the sun

动态模拟证明原行星是怎样保持与太阳之间有一个安全的距离。

Park rangers have had to intervene to keep tourists at a safe distance.

人们纷纷挤在这些灰熊周围为它们拍照，而它们也很配合。 公园管理员不得不出面干涉，让游客同灰熊保持安全的距离。