fast track
idiom快速通道，捷径
He is on the fast track to success.
他正走在成功的快速通道上。
快的；迅速的；高速的
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快的；迅速的；高速的
moving or operating quickly; causing rapid action; high-speed
She is a very fast runner; she won the race easily.
她是一个跑得非常快的运动员；她轻松赢得了比赛。
坚固难攻；天然或人工设防；坚不可摧；强固。
Firm against attack; fortified by nature or art; impregnable; strong.
坚定的,感情不动摇。(现多用于固定短语,如“密友”。)
Steadfast, with unwavering feeling. (Now mostly in set phrases like fast friend(s).)
快速的,迅捷的；轻快的。
Moving with great speed, or capable of doing so; swift, rapid; light.
形容地方,繁忙、熙攘等。
Of a place, characterised by business, hustle and bustle, etc.
The door is stuck fast and won't open.
门卡得很紧，打不开。
This is the fastest car I have ever driven.
这是我开过的最快的车。
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快速通道，捷径
He is on the fast track to success.
他正走在成功的快速通道上。
飞快地，激烈地
The action in the movie was fast and furious.
电影中的动作场面快速而激烈。
玩弄，不负责任
He played fast and loose with her feelings.
他玩弄了她的感情。
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fast（快速的）发音类似“发斯特”，想象一个人发疯似的飞速奔跑。
通常用于描述速度，常见于日常对话、体育、交通等场景，语体中性。
表示'快速的'时作定语或表语；表示'牢固的'时通常作定语。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.