strengthened to prevent silica in the grass from wearing them out... 能够防止草中的二氧化硅磨损牙齿
especially when it comes to finding a mate. 尤其是在寻找配偶时
to rival the long-lost dinosaurs. 能够与消失已久的恐龙相媲美
...and ensures it has reserves to get through leaner times. 并能够有所储备 以便挺过食物较少的时期
Its huge size allows it to travel large distances in search of food... 巨大的身躯 使它能够长途跋涉寻找食物
it became a harsher, more difficult place to live. 它成为了 一个更恶劣、更难以生存的地方
The Antarctic landmass started to split away from South America... 南极大♥陆♥开始从南美洲分离
the warm, wet conditions in which they had thrived began to change. 曾令它们兴旺发展的暖湿条件 开始发生变化