Learner's definition of RAPID
[more rapid; most rapid]
1
: happening in a short amount of time : happening quickly快的；迅速的 -
a rapid [=quick] change in temperature温度的迅速变化
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There's been rapid growth in the number of new businesses in the town.镇上新兴企业的数量已有迅速增长。
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Scientists are concerned about the rapid disappearance of the island's coral reefs.科学家们为岛上珊瑚礁的迅速消失而感到担忧。
2
: having a fast rate快速的；过快的 -
a rapid heartbeat过快的心跳
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rapid breathing急促的呼吸
— rapidity
/rəˈpɪdəti/ noun [noncount]
— rapidly
adverb -
the rapidly [=quickly] changing temperature急剧变化的温度
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He was breathing rapidly.他呼吸很急促。
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Her heart beat rapidly.她的心跳很快。