knottiest []

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附加级

adj.（指木材）多结节的( knotty的最高级 )；多节瘤的；困难的；棘手的

Unemployment, being the knottiest issue of all, has been relegated for now to the back burner. 失业是最棘手的问题，暂时已搁置起来，以后再议。来自互联网