牢记

Traditional form:

牢記

Pinyin (reading):

láojì

Definitions:

• to keep in mind
• to remember

Characters:

• 牢 - pen, prison, stable; fast, firm, secure
• 记 - mark, sign; to note, to record

Traditional characters:

• 牢 - pen, prison, stable; fast, firm, secure
• 記 - mark, sign; to note, to record