firstborns s 长子
N-SING Someone's firstborn is their first child. 头生子女 [oft N n]
She was my firstborn.
她是我的长女。
If firstborns are more successful, last borns are generally more agreeable.
如果长子更成功，幼子通常更讨人喜欢。
And the researchers warned that firstborns could be at risk of other health problems too.
研究员同时警告称，长子长女还有可能出现其他健康问题。
Throughout history, the Jewish firstborns used fasting to forever commemorate the Passover. This type of fasting combines history and humility.
世世代代的犹太长子以禁食作为永远的纪念，这是一种包含历史与谦卑的禁食。
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