helpful

a.给人以帮助的；有益的

hell-bent, hell-cat, Hellene, Hellenic, Hellenistic, hellish, hellishly, hello, helluva, helm, helmet, helmeted, helmsman, help, help forward, help oneself, help sb. do sth, help sb. out, help sb. with sth., helper, helpfully, helpfulness, helping, helpless, helplessly, helplessness, helpmate, helter-skelter, helve, hem, hem(o)-, hem-line, hem-stitch, hemisphere, hemispherical, hemlock, hemophilia, hemorrhage, hemp, hempen,