以防万一

just in case

→ 以防
phrase Rare #29,194
just in case Used when taking a precaution against something unexpected or unlikely.
CH: 我把地址记下来,以防万一。
EN: I wrote down the address, just in case.

她在这里是以防万一

She’s here just in case.

— 隐藏摄像机 (2005)

写“犹太人”,以防万一

Write “Jewish people,” just in case.

— 伯纳德行动 (2007)

不过以防万一嘛

But just in case.

— 月升王国 (2012)

不要拿走螺母,以防万一

Don't remove the nut, just in case.

— 潜行者 (1979)