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N-COUNT
高原
A plateau is a large area of high and fairly flat land.
例句
A broad valley opened up leading to a high, flat plateau of cultivated land.
一条宽阔的山谷展现在眼前，通往一处平整的开垦地高原。
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N-COUNT
（活动或进程中的）稳定阶段，停滞时期
If you say that an activity or process has reached a plateau, you mean that it has reached a stage where there is no further change or development.
例句
The US heroin market now appears to have reached a plateau...
美国的海洛因市场现在似乎已到了停滞期。
I think the economy is stuck on a kind of plateau of slow growth.
我认为经济将停留在缓慢发展的阶段。
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VERB
（活动、进程、成本等）达到稳定阶段，进入停滞时期
If something such as an activity, process, or cost plateaus or plateaus out, it reaches a stage where there is no further change or development.
例句
Evelyn's career is accelerating, and mine is plateauing out a bit...
伊夫琳的职业生涯蒸蒸日上，而我的则停滞不前。
The shares plateaued at 153p.
股票稳定在153便士。