下面为你整理关于 rainy day 的详细百科式信息：

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rainy day

词性：名词短语

音标：/ˈreɪ.ni deɪ/

翻译：

字面意思：雨天

引申含义：紧急情况下使用的储备或备用金，例如“以备不时之需的钱”

读音：

/ˈreɪ.ni/（rainy）

/deɪ/（day）

用法说明：

字面用法：表示下雨的那一天，常用于描述天气。

比喻用法：用于表示为未来不确定或困难时期准备的东西，如储蓄、计划或备用方案。

常与动词 save, prepare, keep 搭配，例如 “save money for a rainy day”。

短语搭配：

save for a rainy day

rainy day fund

rainy day clothes

rainy day activities

rainy day plans

例句 10 句：

I always carry an umbrella on a rainy day.

She stayed at home because it was a rainy day.

They decided to save part of their income for a rainy day.

Rainy days make me feel sleepy and relaxed.

We played board games indoors on a rainy day.

A rainy day fund can help you avoid financial stress.

He wore his old shoes on a rainy day.

Reading books is my favorite activity on a rainy day.

It's wise to set aside some money for a rainy day.

Rainy day plans should include indoor entertainment.

扩展说明：

在日常口语中，rainy day 常用于隐喻意义，比喻未来可能遇到的困难或紧急情况。

在财经和理财领域，“rainy day fund” 是一个常用术语，指应急储蓄。

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如果你需要，我可以帮你做一个 rainy day 的中文详细语境对照表，让每个例句对应中文翻译，更方便学习和记忆。

你希望我做吗？