heart of stone的音標是[?hɑ?t ?v st??]，基本翻譯是“硬心；冷酷無情”，速記技巧是“硬心”=heart(心)+of(介)+stone(石頭)。

Heart of Stone這個詞的詞源可以追溯到古英語，意為“石頭的心”。這個詞的詞形變化形式包括復數形式“hearts of stones”，過去式“hearted stones”和過去分詞“hearted stones”。

相關單詞：

1. Stone Age：石器時代，這個單詞中的“stone”和Heart of Stone中的“石頭”有相同的含義，而“age”表示一個時期或階段。

2. Rock：巖石，這個詞和Heart of Stone中的“石頭”有相同的物質基礎。

3. Stonework：石工，這個詞中的“stone”和Heart of Stone中的“石頭”都與石工技藝有關。

4. Stone-hearted：冷酷無情的，這個詞中的“stone-hearted”是對“heart of stone”的貶義引申，表示冷酷無情。

5. Heart of Oak：橡木之心，這個詞中的“Oak”代表橡樹，而“Heart of Oak”則表示橡木的心部，常用來形容堅固或堅韌的物體。

Heart of Stone這個詞在英語中具有豐富的文化內涵和象征意義，它代表了堅硬、冷酷、無情等負面特質，同時也代表了堅定、頑強和不屈不撓等積極品質。

常用短語：

1. heart of oak

2. heart of gold

3. heart of darkness

4. heart of the matter

5. heart of the desert

6. heart of the city

7. heart of the lion

例句：

1. She had a heart of oak, always thinking of others before herself.

2. He has a heart of gold, always willing to help those in need.

3. The heart of the matter is that we need to work together to solve this problem.

4. The heart of the desert is a place of beauty and desolation all at once.

5. The heart of the city is a place full of excitement and danger.

6. The heart of the lion is fierce, but also kind and loyal.

7. The heart of the matter is that we must always strive to be better people.

英文小作文：

The Heart of Stone

Stone is a symbol of strength and endurance, but it also represents a cold and unfeeling nature. However, there is a hidden heart within each stone, which can be seen when it is cracked open. This heart is made up of the energy and life that once existed within the stone, and it can be transformed into something beautiful and meaningful.

When we are faced with challenges and difficulties, we can find the strength within ourselves by remembering that there is a heart of stone within each one of us. This heart can help us overcome obstacles and become stronger and more resilient individuals.

In conclusion, the heart of stone represents the power and resilience within each one of us, which can be transformed into something beautiful and meaningful. We should embrace this hidden strength within ourselves and use it to help us become better people.