fast
比较级：
形容词比较级: faster
更多词形：
形容词比较级: faster | 形容词最高级: fastest | 动词过去式: fasted | 动词过去分词: fasted | 动词现在分词: fasting | 动词第三人称单数: fasts |
单词例句：
Don't drive your new car too fast until you've run it in.
新汽车未经磨合运转不要开得太快。
That fast food business have expanded through the sale of franchise.
该快餐店通过出售特许经销权而扩大了生意。
His wife admonished him not to drive too fast.
他的妻子警告他开车不要超速。
Bind the rope fast lest it should come loose.
把绳子绑牢，免得它松脱。
The molecules of a gas are moving about extremely fast in all directions.
气体的分子非常迅速地向四面八方运动着。
Oh, sorry. I'm used to walking fast.
哦，对不起。我一贯走路很快。
If you run very fast, you may lose your breath.
如果你跑得很快，你可能会喘不过气来。
My car is sticking fast in the mud.
我的汽车陷在泥里不能动了。
I thought I had the dog fast but he has slipped the collar.
我原以为已经把狗拴牢了，没想到它逃脱了。