近义词有: swiftadj. 迅速的，快的，敏捷的；立刻的n. 雨燕；蝙蝠蛾adv. 迅速地（诗歌或文学用语）Jaegers are swift black birds with long forked tails.贼鸥是身手敏捷，长有叉状长尾的黑鸟。

After the election there was a swift transfer of power.大选之后权力迅速交接。Our task is to challenge the U.N. to make a swiftdecision.我们的任务是敦促联合国做出迅速的决定。They will be swift with swiftness of the tigress.他们迅速堪比母虎。

fast的意思：快的。fast 的近义词是 quick , rapid , swift , hasty , prompt , speedy , instant

近义词是quick，例如：

1.The Home Office is usually quick to deport undesirables.内政部通常会迅速地将不受欢迎人士驱逐出境。

2.The blackbird had a quick, wary look in case the cat was anywhere around.这只乌鸫迅速警惕地张望了一眼，以防那只猫就在附近。

3.All I need to do is have a quick look around.我只要迅速地四处看看就好。