鄭爽自曝想生龍鳳胎,「龍鳳胎」英語怎麼說?

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大家最熟悉的是這個用法：

例句：

Pikachu gave birth to a baby girl early this morning.
也可以簡單的表達為：bear a baby/child

過去式：bore,過去分詞：borne

例句：

Can Pikachu bear a son when she is ninety?

例句：

I was in labour for twelve hours with my first baby.

鄭爽曾在綜藝節目自曝想生三個

並且最想生龍鳳胎

China Daily這樣描述大熊貓龍鳳胎：

A pigeon pair is born at the Chengdu Research Base of Giant Panda Breeding, Sichuan province, on Saturday.

周六，一對大熊貓龍鳳胎在四川大熊貓繁育研究基地出生。

現在二胎政策放開

許多明星都準備生二胎

謝娜前些日子就因懷二胎上熱搜

正確表達：second child/second baby

例句：

I m going to have a second child. one-child per family policy 獨生子女政策let families have two children 開放二胎

例句：

The government in China plans to end its one-child per family policy and instead let families have two children. 
政府計劃終止獨生子女政策，允許每個家庭生育兩個孩子。