fool proof

同根派生

The scheme seemed fool proof,but there was a snake in the grass that hadn't been reckoned with.
这个计策似乎很安全，便忽略了一项潜在的危险。
But, since the herpes virus does not always show its symptoms, prevention is not fool proof.
但是,由于疱疹病毒并不总是表现出症状,预防不是笨蛋证明。
The scheme seemed fool proof, but there was a snake in the grass that hadn't been reckoned with.
这个计策似乎很安全，便忽略了一项潜在的危险。
Consideration of the Fool Proof Design for Instrumentation
关于仪器仪表防误设计的思考
There is positive proof that he did it.
有确切的证据证明他做了此事。