名詞 semi:

1. one of the two competitions in the next to the last round of an elimination tournament
   同義詞：semifinal
2. a truck consisting of a tractor and trailer together
   同義詞：trailer truck, tractor trailer, trucking rig, rig, articulated lorry
3. a trailer having wheels only in the rear; the front is supported by the towing vehicle
   同義詞：semitrailer