英语语法分析

Only two-and-a-half weeks old but already weighing in at 40kg (88b), a baby hippopotamus swims alongside her mother, Kathi.

这只有两周半大却重达40公斤（88磅）的河马宝宝正游曳在妈妈凯瑟琳旁边。

Only two-and-a-half weeks old but already weighing in at 40kg (88lb) a baby hippopotamus swims alongside her mother, Kathi.

这只有两周半大却重达40公斤(88磅)的河马宝宝正游曳在妈妈凯瑟琳旁边。