halfarcn.半弧光灯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 side-view半侧面half lethal time半致死时间half-evergreenadj.半常绿的half-round cut半圆缺口Half Band Filter半带滤波器half-heartedlyadv.不热心地；不尽力地half-splittingn.折半法；对分法half turn astern倒车抵制前进half-wave line半波线half sibs mating半同胞交配