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1·Another dinosaur that lived at the same time was Maiasaura.

其它生活在这个时期的恐龙有慈母龙。

2·A grown-up Maiasaura would eat about 200 pounds of food a day.

一只成年慈母龙一天要吃掉约200磅的食物。

3·Maiasaura walked on four legs and ran on two legs. They were fast runners.

慈母龙用四条腿走路，跑步时用两条腿，它们跑得很快。

4·Bones of the Maiasaura were first found in Montana in the United States Their bones have also been found in Canada.

第一具慈母龙化石在美国的蒙大拿州发现，后来在加拿大也发现过慈母龙的化石。