| 单词 | effort | 
| 释义 | Word Frequency effort(ˈɛfət) noun 1.  physical or mental exertion, usually considerable when unqualified   the rock was moved with effort 2.  a determined attempt   our effort to save him failed 3.  achievement; creation   a great literary effort 4.  physics an applied force acting against inertia  Word origin C15: from Old French esfort, from esforcier to force, ultimately from Latin fortis strong; see force1 | 
	
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