相关单词近義詞 principal 主要的, pivotal 重要的, central 中心的, crucial 決定性的, important 重要的, main 主要的臨近詞focus, FOB, Focalin, Focalux, focalise, focalize, focal set, focal net, focalizer, focal need, focal area, Focal loci相似詞fob, fob sb off, fob sth off on sb, focaccia, focal length, focal point, focal segmental glomerulosclerosis, focus, 返回 focal