音标：[fɑ:st]
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
英汉词典
fast的短语、例句：
ast
adj
(-er, -est)
1
(a) moving or done quickly; rapid 快的; 迅速的; 敏捷的
a fast car, horse, runner, ie one that can move at high speed 跑得很快的汽车、 马、 人.
(b) happening quickly 迅速发生的; 短暂的
a fast journey, trip, etc 匆匆之行、 一趟.
2 (of a surface) producing or allowing quick movement （指物体表面）可供快速运动的
a fast road, pitch 快速车道、 平滑的球场.
3 (of a watch or clock) showing a time later than the true time （指钟表）走得过快的
I´m early my watch must be fast. 我来早了--准是我的表快了.
That clock´s ten minutes fast. 那钟快了十分钟.
4 (of photographic film) very sensitive to light, allowing a short exposure （指胶卷）感光快的, 曝光时间短的.
5 (dated 旧) (of a person) spending too much time and energy on pleasure and excitement; reckless （指人）耽於享乐的, 放荡的
lead a fast life 过放荡的生活.6 (idm 习语) fast and `furious (of games, parties, shows, etc) lively and energetic （指游戏、 聚会、 表演等）生动活泼的. pull a fast one => pull2. fast, adv
1 quickly 快地; 迅速地: Can´t you run any faster than that? 你不能跑得再快点吗?
Night was fast approaching. 黑夜转瞬而至.
2 (idm 习语) run, etc as fast as one´s legs can carry one as fast as one is able 尽快地（跑等）.
fast adj
1
(a) [pred 作表语]
firmly fixed or attached; secure 牢固; 坚固; 稳固的
The post is fast in the ground. 那柱子牢牢地埋在地里.
make a boat fast, ie moor it securely 把船系牢.
(b) [attrib 作定语]
(dated 旧) loyal; close 忠实的; 亲密的
a fast friend/friendship 忠实的朋友[牢不可破的友谊].
2 (of colours) not likely to fade or run （指颜色）不褪色的.
3 (idm 习语) hard and fast => hard1. fast, adv
1 firmly; securely; tightly 牢固地; 稳固地; 紧紧地
be fast asleep, ie sleeping deeply 酣睡
The boat was stuck fast in the mud. 那船深深地陷在泥里.
2 (idm 习语) hold fast to sth continue to believe in (an idea, a principle, etc) resolutely or stubbornly 坚持（某种思想、 原则等）. play fast and `loose (with sb/sth) change one´s attitude towards sb/sth repeatedly in an irresponsible way; trifle with sb/sth 对某人[某事物]反覆无常; 玩弄
Stop playing fast and loose with that girl´s feelings can´t you see you´re upsetting her? 别玩弄那姑娘的感情--难道没看到你已经把她弄得心烦意乱了吗? stand `fast/`firm not retreat, change one´s views, etc 不後退; 不让步; 坚定不移. thick and fast => thick.
fast v [I]
go without (certain kinds of) food, esp for religious reasons 禁食（某种食物）; （尤指）斋戒
Muslims fast during Ramadan. 穆斯林在赖买丹月斋戒. fast, n (period of) going without food 禁食（期）; 斋戒（期）
a fast of three days 禁食三日
break one´s fast 开斋
[attrib 作定语]
fast days 禁食的日子.
fast