This is the 542nd most frequent Chinese word.
牢记
"牢记" means "to firmly remember" or "to keep in mind."
'牢记' means to firmly remember or keep in mind, emphasizing the determination to remember the advice.
我会牢记您的忠告。
I will keep your advice in mind.
Here, '牢记' is used to stress the importance of keeping historical lessons firmly in memory to avoid repeating mistakes.
老师教导我们要牢记历史教训。
The teacher taught us to firmly remember the lessons of history.
In this context, '牢记' highlights the emotional connection and motivation derived from remembering words of encouragement.