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fast（英语单词）_百度百科
fast，英语单词，主要用作形容词、副词、动词、名词，作形容词时意为“快速的，迅速的；紧的，稳固的”，作副词时意为“迅速地；紧紧地；彻底地”，作动词时意为“禁食，斋戒”，作名词时意为“斋戒；绝 …
fast是什么意思_fast的翻译_音标_读音_用法_例句_爱词霸在线词典
Although no form of matter yet discovered moves as fast as or faster than light, scientific experiments have already confirmed that accelerated motion causes a traveler's time to be stretched.
FAST中文 (简体)翻译：剑桥词典 - Cambridge Dictionary
语法 Fast, quick or quickly? Fast and quick mean moving with great speed. Fast is both an adjective and an adverb. Quick is an adjective and the adverb form is quickly. …
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