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wàn 万 wú 无 yì 一 shī 失

万无一失 wàn wú yì shī

absolutely safe; no risk of failure

Literally: ten thousand without one loss

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Origin

From the Shiji (Huaiyin Hou Liezhuan): 以此参之,万不失一 — the form 万无一失 appears in the Tang and later.

How to use it

Predicate or attributive; positive. Often 确保万无一失 or 万无一失的计划.

Example sentences

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  1. 为了确保发射万无一失，技术人员反复检查了每一个系统。
    Wèile quèbǎo fāshè wàn wú yì shī, jìshù rényuán fǎnfù jiǎnchá le měi yí gè xìtǒng.
    To make sure the launch could not fail, the technicians checked every system again and again.
    in order to ensure launch ten thousand without one loss, technical personnel repeatedly check (aspect particle) every one (measure) system
  2. 世上没有万无一失的投资，风险总是存在的。
    Shìshàng méiyǒu wàn wú yì shī de tóuzī, fēngxiǎn zǒngshì cúnzài de.
    There is no such thing as a risk-free investment; risk always exists.
    world on not-have ten thousand without one loss (attributive particle) investment, risk always exist (particle)

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