单词	be well up in something
释义	be well up in something 精通；熟悉
随便看	distance measuring gate distance measuring ground beacon distance-measuring network Distance measuring of photo distance measuring potentiometer distance-measuring potentiometer distance-measuring radar distance-measuring satellite Distance Measuring System distance measuring theodolite distance-measuring theodolite distance measuring wedge distance measurin gwedge distance measuring wheel distance mechanism distance medical care distance medical education distance medley distance member distance mesurement equipment distance metaphor distancemeter distance meter distancemeter of reticule distance meter, range finder