我能跑得快。
你不必跑得很快。
雪橇狗跑得快。
He pretended to be hurt and unable to run fast.
他假装自己受伤，不能跑得快。
They can stay alive because they run fast to avoid lions and other enemies.
它们能活下来是因为它们跑得快，能够避开狮子和其他敌人。
She lost the game because the weight of her shoes made it difficult for her to run fast.
她输了比赛，因为鞋子的重量使她很难跑得快。
This animal is a horse. A horse can run fast.
这是一匹马。马跑得很快。
In 'run fast', the adverb 'fast' is a postmodifier.
在run fast中，副词fast是后置修饰词。
Camels can run fast on sand with large feet.
骆驼的大脚使它在沙地上跑得很快。
You don't have to run fast or for long to see the benefit.
你不需要跑得多快、多久，就能看到好处。
Biscuit wants to run fast, too.
小饼干也想跑得快些。
他确实跑得很快。
He can run fast enough to catch a bus.
他跑得很快足以赶上公共汽车。
但是我能跑得很快。
兔子跑得快。
He didn't run fast enough to catch the bus.
他跑得不够快，没赶上公共汽车。
I can run fast. Dad, you should come to see me.
我跑得很快。爸，你要来看我喔。
He must run fast lest he (should) miss the train.
他必须快跑，免得赶不上火车。
Don't expect the horse to run fast but not let it graze.
不要又要马儿跑，又要马儿不吃草。
How can a horse like this run fast, when it is encumbered with armor?
看看这匹马，甲胄这么重，哪儿还跑得快啊！
Pronghorn run fast—upwards of 60 miles an hour—but they rarely jump fences.
叉角羚跑的快——每小时60英里（约97公里）以上——但是它们很少跳栅栏。
Most native XML databases provide XQuery extensions that are designed to run fast.
大多数原生xml数据库提供用于快速运行的XQuery扩展。
When you take a day off, you can run fast and hard next time you get out there.
一旦你休息好了，下一次你会跑的更快更努力！
If a foal cannot run fast enough, its mother will stay behind and defend it to the death.
如果有小斑马跑得不够快，它的妈妈会留下来用生命保护它。
Isn't this like wanting the horse to run fast, but also not wanting the horse to eat grass?
这不等于又想马儿跑的快，又想马儿不吃草么？
They can't run fast or scare an enemy off with a loud roar or spray a predator with a noxious scent.
它们跑不快，没有大声的咆哮可以吓走敌人，也不能散发出讨厌的气味熏走敌人。
They can't run fast or scare an enemy off with a loud roar or spray a predator with a noxious scent.
它们跑不快，没有大声的咆哮可以吓走敌人，也不能散发出讨厌的气味熏走敌人。
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