This is the 782nd most frequent Vietnamese word.
cứu
"Rescue" or "save."
In this sentence, 'cứu' is used in the sense of 'to save' or 'to rescue' someone from harm or danger.
Tôi cảm ơn bạn đã cứu tôi.
I am thankful to you for saving me.
Here, 'cứu' is utilized to indicate the act of preserving or protecting species from extinction.
Chúng ta cần cứu những loài động vật đang có nguy cơ tuyệt chủng.
We need to save the endangered animals.
In this context, 'cứu' is metaphorically used to mean 'salvage' or 'recover' something within certain scenarios.