Halfter哈尔夫特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-countersunk head半埋头half-time physiatrist半日理疗医师half-lethiferous dose半致死量half-wavelength plate半波长板half-word instruction半字指令half-sib progeny test半同胞子代half-finished product半成品half shadow polarimeter半阴旋光计,半影偏光计half-duplex operation半双向操作,半双工运用,半双工通信half-turn broken jump转体半周分腿跳跃