如果可能的话建议带上一张信用卡预防万一。

If possible carry a credit card for emergencies.

youdao

对了，萨莉给你留下了一张便条，她怕你万一打电话来。

Well, Sally left a message for you. She wrote it down in case you called.

youdao

我张贴出一张油漆未干的告示以防万一。

I put up a sign saying WET PAINT just in case.

youdao

我张贴出一张油漆未干的告示以防万一。

I put up a sign saying WET PAINT just in case.

youdao