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。

《牛津词典》

The lake seems to be acid because no signs of life are noticed.

这片湖水看似是酸水，因为没有任何生命的迹象。

youdao

In most neighborhoods of Dantu, there are no cars, no signs of life.

丹徒的大部分住宅区没有汽车，没有人烟。

youdao

Rescuers then used listening devices and cameras at the scene, but found no signs of life.

BBC: Florida sinkhole: Jeffrey Bush home partially demolished

There were no canals, no little green men, no signs of life whatsoever.

ECONOMIST: Martian chronicles

This week on Mars, Curiosity took its first sniff of Martian air and took a self-portrait, but it found no signs of life.

FORBES: Curiosity Sniffs The Martian Atmosphere But Finds No Sign Of Life