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）
tide over
To support through a difficult period支持…度过一段困难时期
英语四级真题
And the man was shocked to wake up and find the tide had come in and completely surrounded him, cutting him off from the shore.
2019年12月四级真题（第二套）听力 Section A
So he lay down and fell asleep, but the tide swept in quickly at the beach.
2019年12月四级真题（第二套）听力 Section A
When interviewed Keith porter of the southport beach said, our beach is so flat that it's very common for the tide come around the back of people and cut them off from the beach.
2019年12月四级真题（第二套）听力 Section A
英语六级真题
The rising tide of trade is also good news for people who work in trade-sensitive businesses, especially those that produce commodities for which global demand sets the price – agricultural goods, mining, metals, oil.
出自-2011年12月阅读原文
help tide over the current ageing crisis
出自-2010年12月阅读原文
I know these are tide times," she added, "but everyone agrees on the importance of safeguarding our employees and members of the public who come into the building.
出自-2012年12月听力原文
柯林斯高阶英汉双解学习词典释义
N-COUNT
潮;潮水;潮汐
The tide is the regular change in the level of the sea on the shore.