fastness的音標是[?fɑ?stn?s]，基本翻譯是“堅固，穩固；強大”。速記技巧可以是將其拆分為字母組合進行記憶，例如將“f”和“st”聯想為“石頭”，將“as”聯想為“螞蟻”，這樣記憶可以聯想到“石頭上有很多螞蟻，螞蟻在保護著這塊土地，即堅固、穩固”。

Fastness這個詞的詞源可以追溯到拉丁語和古英語，它指的是防御工事、堡壘或城堡。這個詞在英語中的變化形式包括名詞形式fastnesses、副詞形式fastest，形容詞形式fast、fasten等。

相關單詞：

Fortress：意為堡壘，這個詞直接來源于拉丁語fortis，意為強大的、堅強的。Fortress通常指具有強大防御能力的建筑物或地區。

Stronghold：意為堡壘或根據地，這個詞來源于古英語，意為“強者的堡壘”。Stronghold通常指一個地方在軍事上具有重要地位，是軍隊或抵抗力量的重要基地。

Bastion：意為城堡的城垛或防御工事，這個詞來源于法語，意為“支柱”。Bastion通常指城堡或建筑物上的突出部分，用于增強防御能力。

Fortified：意為被加固的或防御的，這個詞來源于拉丁語fortis，與fortress一詞的詞源相同。Fortified通常指一個地方經過加固或防御措施，具有強大的防御能力。

Fence：意為圍欄、籬笆等障礙物，這個詞在英語中可以表示物理上的障礙物，也可以表示心理上的界限或防線。Fence在軍事上可以指防御工事，也可以指個人或團體之間的界限。

以上這些單詞都與fastness這個詞源有關，它們都表示防御、保護和加強的意思。這些單詞在英語中廣泛應用，不僅在軍事領域，也在建筑、歷史和文化等領域中。

常用短語：

1. fasten oneself

2. fasten up

3. fastnesses

4. be fast

5. fasten down

6. fasten tightly

7. fasten securely

例句：

1. I fastened my seat belt to ensure my safety during the journey.

2. The fortress was built to withstand any attack, and it remains a symbol of fastness today.

3. The city is a stronghold of resistance, and its people are determined to defend their fastness.

4. The ship was fastened down to prevent it from being washed away by the waves.

5. The rope was fastened securely around the package to ensure it wouldn"t fall off.

6. The stronghold was a place of safety for those fleeing persecution.

7. The city"s walls are a testament to its past as a stronghold of power and wealth.

英文小作文：

My favorite place is the fortress where I grew up. It was a place of safety and security for me when I was young, and it still holds a special place in my heart. The fortress was surrounded by high walls and towers, and it was always a source of pride for me to see it standing strong against the elements. Today, it is a symbol of my childhood memories and a reminder of the strength and resilience of nature. I often think about how the fortress could withstand any attack, and I am reminded of the importance of being resilient in the face of challenges in life.