frequentadj.频繁的；经常的vt.常到；常去frequent from从 ... 捞出 ...frequent path频繁路径frequentativeadj.表示反覆的n.反覆动词；反覆形；反覆相frequent tree频繁子树frequent part频发部位frequent look经常的表情frequent item频繁项frequent term常用词Frequent trip频繁跳闸frequent sets频集