刻骨（kè gǔ）

Pronunciation: kè gǔ

Basic Meaning: deeply ingrained; unforgettable

Detailed Explanation: The idiom "刻骨" refers to something that is deeply ingrained in one's bones, indicating an unforgettable experience or feeling. It describes a profound impact that leaves a lasting impression on a person.

Usage Scenarios: This idiom is often used to describe intense emotions or memories, such as a deep love, hatred, or a painful experience that lingers in one's heart and mind.

Story Origin: The idiom "刻骨" originated from the Chinese classic novel "Dream of the Red Chamber," written by Cao Xueqin in the 18th century. In the novel, the character Jia Baoyu deeply loves his cousin Lin Daiyu. Their love for each other is described as "刻骨銘心," meaning the love is deeply ingrained in their bones and unforgettable.

Structure of the Idiom: The idiom "刻骨" is a combination of two characters. "刻" means "to carve" or "to engrave," while "骨" means "bone." Together, they create the image of something being deeply etched into one's bones.

Example Sentences:

1. 他對故鄉的思念刻骨銘心。

(He has a deep longing for his hometown that is unforgettable.)

2. 這次失敗的經歷讓他刻骨銘心，決定再也不犯同樣的錯誤。

(The experience of failure this time left a deep impression on him, and he decided to never make the same mistake again.)

Memory Techniques: To remember the meaning of "刻骨," imagine a bone being carved with deep engravings, symbolizing something unforgettable that is deeply ingrained in your memory.

Extended Learning: Explore other idioms related to intense emotions, such as "心如刀割" (heart-wrenching) and "苦盡甘來" (sweet after bitter).

Example Sentences from Different Age Groups:

1. Children: 今天的游樂園之旅刻骨銘心，我永遠不會忘記。

(Today's trip to the amusement park was unforgettable, and I will never forget it.)

2. Teenagers: 這部電影的結局真是刻骨銘心，讓我哭了好久。

(The ending of this movie was deeply ingrained in my memory, and it made me cry for a long time.)

3. Adults: 那場車禍的慘狀刻骨銘心，我至今仍然無法忘記。

(The horrific scene of the car accident is deeply ingrained in my memory, and I still can't forget it.)