单词	hollow out a tree,
释义	英華☞excavate
随便看	digital--companding digital comparator digital comparator--dc digital comparator，dc digital compensator digital complement digital components testing digital compression digital compression modem digital compression of increased transmission digital computation digital computer digital--computer digital computer association digital computer program digital computer programming digital computer programming，dcp digital computer program，dcp digital computers digital computer simulation digital computer simulation of transient stability digital computer solution digital computer system digital computer system--dcs digital computer system，dcs