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vi. ��Լ����ʡ����Ч������
vt. ��Լ����ʡ����Ч������

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v. conserve��economise��husband��save

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v.   blow��squander��waste

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1. We must economize on light and fuel.
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2. This new machine will help economize on raw materials.
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3. The bank manager held forth for an hour on the need to economize .
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v.
  1. use cautiously and frugally
  2. spend sparingly, avoid the waste of

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economize
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economize in
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economize on
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Economize on energy
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economize on social labor
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