He could run fast on the level.
在平地上他能跑得很快。
When my father was young he could run fast.
我父亲年轻时能跑得很快。
Corythosauruses lived in groups. They could run fast. They were pretty smart.
冠龙成群居住。它们能跑得很快。冠龙是相当聪明的恐龙。
One day a hare was telling the other animals how fast he could run.
一天，兔子正在向其他动物炫耀他能跑得很快。
How fast a marathon could I potentially run?
我跑马拉松的速度可能有多快？
He said he could run as fast as a race horse.
他说他能跑得像赛马一样快。
He boasted that he could run very fast.
他吹牛说他可以跑得很快。
Now the lion could speak. And the snail could run as fast as a horse!
现在狮子能说话了。蜗牛也可以和马走的一样快了。
No, I guarantee that she would run back to her wonderful mud, as fast as she could.
不是的，我保证她会以迅雷不及掩耳的速度，奔回她最爱的泥沼地。
The short - distance runner wishes he could run as fast as the ostrich.
这位短跑运动员真希望自己能跑得像驼鸟一样快。
So John was proud of this and always ready to show people how fast he could run .
于是，约翰因此而自豪，总是向人显示他能跑得有多快。
I could run pretty fast when I was boy.
我小时候跑得相当快。
Albertosaurus walked on two back legs. It could run but not very fast.
阿尔贝塔龙用两只后腿走路。它能跑，但跑的不是很快。
Albertosaurus walked on two back legs. It could run but not very fast.
阿尔贝塔龙用两只后腿走路。它能跑，但跑的不是很快。
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