wàn
yī
1
just in case
2
if by any chance
3
contingency
万一他不同意,我们怎么办?
What if he doesn't agree?
万一我们迷路了,可以问路人求助。
In case we get lost, we can ask for help from passersby.
万一他忘了带钱,你能借给他吗?
In case he forgets to bring money, can you lend it to him?
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