1·Keep an umbrella for a rainy day.
下雨天要带把伞。
2·I've got a little put aside for a rainy day, but I might need to earn a little more before we go.
我已经存了一些钱以备不时之需，但在我们走之前，我可能还要再多挣点。
3·I've got a little put-aside for a rainy day, but I might need to earn a little more before we go.
我已经存了一些钱以备不时之需，但在我们走之前，我可能需要多挣点钱。
4·They have a little nest egg tucked away somewhere for a rainy day.
他们有一点藏在某处的应急积蓄。
—— 《柯林斯英汉双解大词典》
5·Start Saving for a Rainy Day Today
开始储蓄以备不时之需
6·Save some money for a rainy day.
存点钱以防万一。
7·Save some for a rainy day.
留着一些以备下雨天用。
8·The second lump I will save for a rainy day.
第二块金子我会储存起来度过雨季。
9·Do not wait for a rainy day to fix the roof.
不要等到下雨时才去修补屋顶。
10·He is planning to amass a fortune for a rainy day.
他正打算积蓄财富以备不时之需。