(noun.) the quality of being difficult; 'they agreed about the difficulty of the climb'.
(noun.) a factor causing trouble in achieving a positive result or tending to produce a negative result; 'serious difficulties were encountered in obtaining a pure reagent'.
(noun.) a condition or state of affairs almost beyond one's ability to deal with and requiring great effort to bear or overcome; 'grappling with financial difficulties'.
录入:内丽
伊诺克校对