halfwitn.笨蛋halfn.一半；下半场；半学年adj.一半的；不完全的adv.一半地；不完全地half rigid grass-roots半刚性基层half-life compensation半衰期补偿, 半衰期校正half-intracavity laser半内腔激光器half-angle transmission半角传动half-confocal resonator半共焦谐振腔half-wave rectification半波整流half-sandwich complexes半夹心配合物half-turn straight jump转体半周同脚跳跃half bright and half dark半明半暗half-station instrument半站仪

half batn.半砖