-sofarbehindthatonecanonlyseethedustoftheriderahead;beafarcryfrom...;bethrownintotheshade;beunabletokeeppacewith...;fallfarbehindastobeunableeventoseethedustoftheriderahead;feeloneisnotanother'sequal;toofarbehindtocatchup;tooinferiortobearcomparison;unequalto...:
Hecanbeatmehollowatmathematics.在数学上他造诣很高，我是望尘莫及。
