确保建筑工程质量万无一失，是我国工程项目建设中的项目设计、施工和监理过程中的一个永恒不变的主题。

Ensure the construction quality and no danger of anything going wrong, is our country engineering construction projects in the project design, construction and supervision in the course of an eternal theme.

这个食谱绝对管用，每次都万无一失。

This recipe is foolproof ─ it works every time.

我姐姐是个万无一失的投资顾问。

My sister's the oracle on investment matters.

这个系统并非是万无一失。

The system is not 100 per cent foolproof

为确保万无一失，一架警用直升机一直在空中警戒。

To make extra certain, a police helicopter kept watch from the skies.

他们认为自己的计划万无一失，结果一败涂地。

Their copper-bottomed scheme went badly wrong.

真奇怪，人们居然用了这么长时间才把握住一个万无一失的机会。

It is surprising that it has taken people so long to take advantage of what is a win-win opportunity.

由他掌舵，通过这段激流险滩是万无一失的。

With him at the helm, we areahundredpercentsafe crossing these treacherous rapids.

我穿黑色礼服去参加聚会&万无一失。

I'm wearing black for the party& it's always a safe bet.