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peak and trough?



 
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We often change the tense while changing direct speech to indirect speech? | 'There is' vs 'is': Near my house is a park where there are some trees which...
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peak and trough? #1 (permalink) Fri Sep 04, 2009 18:19 pm   peak and trough?		  
What is the meaning of this phrase: "peak and trough." It refers to wave an the sea. Can you show me the synonym of this phrase? Thank you so much.
Jung
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peak and trough? #2 (permalink) Fri Sep 04, 2009 19:35 pm   peak and trough?		  
Hi,

This expression suggests 'highs and lows' or 'ups and downs' or 'high points and low points.

Alan
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We often change the tense while changing direct speech to indirect speech? | 'There is' vs 'is': Near my house is a park where there are some trees which...
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