Do you have positive proof that she took the money?你有确凿证据证明她拿了那些钱吗？There is no positive proof that life exists on other planets.没有确凿证据证明其他星球上存在生命。There is positive proof that he did it.有确凿的证据证明他做了这件事。We have positive proof that he was a blackmailer.我们有确凿的证据证明他曾敲诈勒索。