回答

・stick in one's memory
・etched in one's memory

「牢牢記住」可以用英語的 stick in one's memory 或 etched in one's memory 來表達。

What should I do to get a lot of phrases to stick in your memory?
（怎麼樣才能讓你牢牢記住很多片語呢？）

In order to etched the input knowledge in your memory, I think it is good to actually use the knowledge.
（我認為最好是實際使用你輸入的知識，以便將其牢牢記住。）

有幫助｜0