eldest child

基本解释

The experience is said to have made Tian Wenhua, the second eldest child of the family, determined to make her family proud.
据说，这一经历使身为田家老二的田文华发誓要光耀门楣。
Catherine Elizabeth Middleton, 28, is the eldest child of Michael and Carole Middleton, a businessman and former air stewardess.
凯瑟琳.伊丽莎白.米德尔顿，今年28岁，是米歇尔.米德尔顿和卡洛儿.米德尔顿的长女。她在经商，以前当过空姐。
Having read that her eldest child has just started at a private school, I am interested to hear the famously state-educated designer's take on this.
我之前知道她最大的孩子在一间私立学校上学，作为一个在公立学校读书的著名时装设计师，我很想知道她怎么应对这个问题。

Just as the Lobos' visas came through, Ramon, the eldest child, turned 21.
NPR: A Family's Wait for U.S. Visas Spans Generations
"It is his baby, " says his eldest child, Teresita Sy-Coson, 56.
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