help someone through a difficult period, especially with financial assistance
（尤指通过财政资助）使某人度过（困难时期）
she needed a small loan to tide her over.
她需要一小笔贷款以渡过难关。
To support through a difficult period
支持…度过一段困难时期
I asked for $100 to tide me over till payday.
我要了100美元以在发工资之前度过难关