keep up
 保持,持續,使…不能入睡,熬夜,支撐


 keep up
      v 1: maintain a required pace or level; "He could not keep up and
           dropped out of the race"
      2: lengthen or extend in duration or space; "We sustained the
         diplomatic negociations as long as possible"; "prolong the
         treatment of the patient"; "keep up the good work" [syn: prolong,
          sustain]
      3: keep in safety and protect from harm, decay, loss, or
         destruction; "We preserve these archeological findings";
         "The old lady could not keep up the building"; "children
         must be taught to conserve our national heritage"; "The
         museum curator conserved the ancient manuscripts" [syn: conserve,
          preserve, maintain]
      4: keep informed; "He kept up on his country's foreign
         policies" [syn: keep abreast, follow]
      5: prevent from going to bed at night; "The anticipation of the
         trip kept the children up all night"; "I kept myself up
         all night studying for the exam"