We kept our eyes peeled for any signs of life.

我们注意寻找任何生命的迹象。

The body was cold and showed no signs of life.

那躯体冰凉，显现不出有生命的迹象。

Are there any signs of life?

有生命的迹象吗？

Scientists are studying photographs of the planet for signs of life.

科学家仔细察看行星照片，寻找生命迹象。

But there are signs of life.

但是，这里却有生命的迹象。