英语中表达“求生”的常用短语是 seek to live on或 seek to survive。这些短语直接传达了为了生存而采取的行动或目标。

例如：

1. They were lost in the forest and had to seek to survivefor days until they were rescued。

2. In a natural disaster, it's crucial to know basic survival skillsto seek to live on。

这些表达可以帮助你在紧急情况下描述自己的目标或描述他人的行为。