firstborn的音標是["f?rstb??n]，基本翻譯是長子，首生兒。速記技巧可以是利用讀音記憶或者詞根記憶等方法來記住這個單詞。

Firstborn 的英文詞源為 first (第一) + born (出生)，表示“第一個出生的孩子”。

變化形式：復數形式為 firstborns，在古英語中還可以寫作 fyrstboren。

相關單詞：

1. eldest - 最年長的，最開始的，最古老的

2. primogeniture - 長子繼承權，長子特權

3. patriarch - 家長，族長；創始人；先祖

4. procreation - 繁殖，生育

5. primogenital - 有關生殖器的，與生殖有關的

6. primogenitor - 創造者，創始人

7. first-born - 最大的孩子，首先出生的

8. birthright - 出生時繼承的權利，先占權

9. founder - 船長，創始人；奠基者

10. first-rate - 第一流的，優秀的，卓越的

常用短語：

1. firstborn son/daughter

2. firstborn of the litter

3. first in line

4. the eldest

5. the head of the family

6. the oldest child

7. the prime mover

雙語例句：

1. He is the firstborn son of our family. (我們家的長子)

2. She is the firstborn of her litter of puppies. (她是最年長的幼崽)

3. She always sits in the first in line for the job. (她總是坐在第一個位置上等待工作)

4. The eldest child of the couple is always treated as the head of the family. (這對夫婦的長子總是被視為家里的頭頭)

5. The oldest child in our class is always the prime mover in any activity. (我們班級里最年長的孩子總是任何活動的核心人物)

6. The firstborn of a new litter of puppies is always a special dog. (一只新幼崽的長子總是特別的狗)

7. The firstborn of a new year is always a special gift. (新年的第一個孩子總是特別的禮物)

英文小作文：

Title: The Firstborn of Spring

Spring has come, and with it, a new litter of puppies has been born. Amongst all the puppies, there is one special puppy, the firstborn of the litter. He is the first to explore his new world, and he is the one that everyone looks forward to.

He is the symbol of hope and renewal, and he represents all that is new and exciting about spring. He is the embodiment of life"s first steps, and he reminds us that with each new beginning, there is hope and possibility.

May we all be like the firstborn of spring, full of energy and enthusiasm, ready to explore and conquer new horizons. Let us embrace each new day with open arms, ready to embrace all that it has to offer. For it is only through embracing change and uncertainty that we can truly experience life to its fullest.