fast

汉语翻译：
a. 快速的, 紧的
ad. 很快地, 紧紧地, 彻底地
n. 绝食, 斋戒
vi. 绝食, 斋戒
【医】 抗拒的, 禁食词型变化：
形容词比较级:faster最高级:fastest动词过去式:fasted过去分词:fasted现在分词:fasting第三人称单数:fasts英语解释：
名词 fast:

abstaining from food同义词：fasting

动词 fast:

abstain from certain foods, as for religious or medical reasons

abstain from eating

形容词 fast:

acting or moving or capable of acting or moving quickly

(used of timepieces) indicating a time ahead of or later than the correct time

at a rapid tempo

(of surfaces) conducive to rapid speeds

firmly fastened or secured against opening同义词：barred, bolted, latched, locked, secured

resistant to destruction or fading

unrestrained by convention or morality同义词：debauched, degenerate, degraded, dissipated, dissolute, libertine, profligate, riotous

hurried and brief同义词：flying, quick

securely fixed in place同义词：firm, immobile

unwavering in devotion to friend or vow or cause同义词：firm, loyal, truehearted

副词 fast:

quickly or rapidly (often used as a combining form)

firmly or tightly同义词：tight

例句：

They run faster and faster.他们跑得越来越快。

I like fast music.我喜欢节奏快的音乐。

详细解释：
fast
adj.（形容词）
fast.er,fast.est
Acting, moving, or capable of acting or moving quickly; swift.
快的，敏捷的：行为的、动作的，或能够快速行为或运动的；敏捷的
Accomplished in relatively little time:
短暂的：很短时间内完成的：
例句：
a fast visit.
短暂的拜访
Indicating a time somewhat ahead of the actual time:
快的，稍早的：比准确的时间提前一些的：
例句：
The clock is fast.
这个钟快了
Adapted to or suitable for rapid movement:
适合快速运动的：
例句：
a fast running track.
快速跑道
Designed for or compatible with a short exposure time:
为短曝光的：为短曝光时间设计或与之相适宜的：
例句：
fast film.
感光快性胶片
Disposed to dissipation; wild:
行为放荡的；粗野的：
例句：
ran with a fast crowd.
与一伙放荡不羁的人交往
Flouting conventional moral standards; sexually promiscuous.
蔑视礼节的；性行为不检点的
Resistant, as to destruction or fading:
不易毁坏或褪色的：
例句：
fast colors.
不易褪的颜色
Firmly fixed or fastened:
牢固的，紧紧的：牢固地连接或系住的：
例句：
a fast grip.
紧握
Fixed firmly in place; secure:
坚牢的：连接得十分牢固的；安全的：
例句：
shutters that are fast against the rain.
能够挡雨的百叶窗
Firm in loyalty:
忠诚的：
例句：
fast friends.
忠诚的朋友
Lasting; permanent:
永久的；永恒的：
例句：
fast rules and regulations.
永恒的法律和法规
Deep; sound:
深沉的；彻底的：
例句：
in a fast sleep.
睡得很熟
adv.（副词）
In a secure manner; tightly:
紧紧地：以一种安全的方式；紧紧地：
例句：
hold fast.
紧紧地抓住
To a sound degree; deeply:
彻底地；深沉地：
例句：
fast asleep.
睡得很熟
In a rapid manner; quickly.
快速地；迅速地
In quick succession:
快速而连续不断地：
例句：
New ideas followed fast.
新点子层出不穷
Ahead of the correct or expected time:
比正确或约定的时间提前地：
例句：
a watch that runs fast.
走得快的表
In a dissipated, immoderate way:
生活放荡地：以放荡的、无节制的方式：
例句：
living fast.
生活放荡
Archaic Close by; near.
【古语】 接近；临近
来源：
Middle English
中古英语
from Old English fôst [firm, fixed] * see past-
源自 古英语 fôst [牢固的，结实的] *参见 past-
<参考词汇><同义词>fast,rapid,swift,fleet,speedy,quick,hasty,expeditiousThese adjectives refer to something, such as activity or movement, marked by great speed.Fast and rapid are often used interchangeably, thoughfast is more often applied to the person or thing in motion, andrapid, to the activity or movement involved:
这些形容词指活动或运动极为快速的事物。Fast 和 rapid 通常可以互换， 然而fast 更多指运动中的人或物， 而rapid 指相关的活动或运动：
例句：
a fast car;
飞驰的汽车；
例句：
a fast plane;
快的飞机；
例句：
a rapid mountain stream;
轻快的山溪；
例句：
rapid development;
快速的发展；
例句：
a fast runner;
快跑者；
例句：
rapid strides.
快步走。
Swift suggests smoothness and sureness of movement (
Swift 指运动的流畅性与稳靠性(
例句：
a swift current;
稳定的电流；
例句：
swift but unclear handwriting), andfleet, lightness of movement (
流畅但不清楚的书法笔迹)， 和fleet， 指动作的轻盈(
例句：
The cheetah is the fleetest of animals).
猎豹是最轻捷的动物)。
Speedy refers to velocity (a speedy worker ) or to promptness or hurry (
Speedy 指速度(速度快的工人 ) 或指快速或匆忙(
例句：
hoped for a speedy resolution to the problem).
期待着问题的快速解决)。
Quick most often applies to what takes little time or to promptness of response or action:
Quick 大多指花费极少时间或反应或动作的敏捷：
例句：
Let`s eat a quick snack.
让我们吃一顿快餐吧!
例句：
Only her quick reaction prevented an accident.
她的快捷反应避免了一次事故。
Hasty implies hurried action (
Hasty 指匆忙的行为(
例句：
a hasty visit) and often a lack of care or thought (
一次匆忙的拜访)， 且通常指粗心或少加思索(
例句：
regretted the hasty decision).
令人遗憾且草率的决定)。
Expeditious suggests rapid efficiency:
Expeditious 指快速有效的：
例句：
sent the package by the most expeditious means. See also Synonyms at faithful
以最快速有效的方式送包裹 参见同义词 faithful

---------------另--------------
fast
fast 2
v.intr.（不及物动词）
fast.ed,fast.ing,fasts
To abstain from food.
绝食：拒绝吃食物
To eat very little or abstain from certain foods, especially as a religious discipline.
禁食，斋戒：少吃或不吃某些食物，特指宗教戒律
n.（名词）
The act or practice of abstaining from or eating very little food.
断食，节食：不吃或少吃食物的行为
A period of such abstention or self-denial.
断食期，节食期：这种戒除或自我克制的时期
来源：
Middle English fasten
中古英语 fasten
from Old English fôstan * see past-
源自 古英语 fôstan *参见 past-