The cheetah can run very fast, reaching incredible speeds in a short time.（猎豹能跑得非常快，在短时间内达到惊人的速度。）

He typed the report fast to meet the deadline.（他快速地打报告以赶在截止日期前完成。）

The river flows fast after the heavy rain.（大雨过后河水湍急。）

My heart beats fast when I'm nervous.（我紧张的时候心跳很快。）

The new sports car accelerates fast on the highway.（这辆新跑车在高速公路上加速很快。）

She reads books fast and can finish a novel in a day.（她读书很快，一天就能读完一本小说。）

The children were running fast around the playground, laughing all the way.（孩子们在操场上快速奔跑，一路笑着。）

The clock's hands seem to move fast when you're having fun.（当你玩得开心的时候，时钟的指针似乎走得很快。）

We need to work fast if we want to complete this project on time.（如果我们想按时完成这个项目，就得快点工作。）

The wind was blowing fast, making the leaves rustle loudly.（风刮得很快，树叶沙沙作响。）

The train travels fast between the two cities, saving a lot of time.（火车在两座城市之间行驶得很快，节省了很多时间。）

Fast food is popular because it can be served quickly.（快餐很受欢迎，因为上菜快。）

You should make a decision fast or you'll miss this opportunity.（你应该快点做决定，否则你会错过这个机会。）

The athlete runs so fast that he breaks the record every time.（这位运动员跑得非常快，每次都打破纪录。）

The waterfall drops fast from the cliff, creating a spectacular scene.（瀑布从悬崖上飞速落下，营造出壮观的景象。）

The fire spread fast in the dry forest, endangering many lives.（大火在干燥的森林里迅速蔓延，危及许多生命。）

She learns languages fast due to her excellent memory.（由于记忆力好，她学语言很快。）

The plane took off fast and smoothly into the blue sky.（飞机快速平稳地起飞，冲向蓝天。）

The old man walks fast despite his age, showing great vitality.（这位老人尽管年纪大了，但走路很快，显示出极大的活力。）

The digital world is changing fast, and we must keep up with it.（数字世界变化很快，我们必须跟上它的步伐。

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