| 单词 | poor grasp | 
| 释义 | poor grasp Even those of us prepared to modify our houses to save energy seem to have a poor grasp of the best options.  Times, Sunday Times  Unfortunately for them, a dodgy pitch and poor grasp of economics means their plan might struggle to get off the ground.  The Sun  Anyone with a poor grasp of the law and a dodgy past will conclude that voting ain't for them.  Times, Sunday Times  They urged lenders to offer 'mortgage counselling' to those with a poor grasp of mathematical concepts.  Times, Sunday Times  He however never graduated as a pilot, allegedly because of a poor grasp of mechanical aspects of aircraft operation.  Retrieved from Wikipedia CC BY-SA 3.0    | 
	
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