adv.无生命地；死一般地
The scientists guess that Venus is lifeless. 科学家猜测在金星上没有生命。
Life is lifeless without health. 没有健康就没有生气。
That planet is probably lifeless. 那颗行星上可能没有生命。
She shook Juliet's lifeless body and then screamed. 她摇了摇茱丽叶僵硬的躯体，然后尖叫了起来。
It was black, cold, and lifeless as before. 它还是先前一样黑暗，冷清，死气沉沉。
