单词	剜空心思
释义	剜空心思 wānkōng xīnsīexhaust one's wits/ingenuity
随便看	differential attenuation mode differential audio output differential backup differential back-washing differential ballistic wind differential barometer differentialbarometer differential bevel gear differentialbewegung differential binary phase shift keying differential binary phase shift keying{=dbpsk} differential birth rate differential block differential blood cell count differential blood count differential bomb differential bond differential bone differential booster differential brake differential bridge differential cage differential calculus differential calculus interference microscope differential calorimeter