rock fragments and pebbles

同义词：crushed rock

cause annoyance in; disturb, especially by minor irritations

同义词：annoy??/??rag??/??get to??/??bother??/??get at??/??irritate??/??rile??/??nark??/??nettle??/??vex??/??chafe??/??devil

cover with gravel

be a mystery or bewildering to

同义词：perplex??/??vex??/??stick??/??get??/??puzzle??/??mystify??/??baffle??/??beat??/??pose??/??bewilder??/??flummox??/??stupefy??/??nonplus??/??amaze??/??dumbfound

unpleasantly harsh or grating in sound

同义词：grating??/??gravelly??/??rasping??/??raspy??/??rough??/??scratchy