(noun.) an obstruction that stands in the way (and must be removed or surmounted or circumvented).
(noun.) something immaterial that stands in the way and must be circumvented or surmounted; 'lack of imagination is an obstacle to one's advancement'; 'the poverty of a district is an obstacle to good education'; 'the filibuster was a major obstruction to the success of their plan'.
恩里克录入
乔纳森手打