helium

n [U] chemical element, a light colourless gas that does not burn, used in airships 氦. =>App 10 见附录10.

Hegira (also Hejira), heifer, heigh-ho, height, heighten, heinous, heinously, heinousness, heir, heir apparent, heir presumptive, heiress, heirloom, heist, Hejira, held, helical, helicopter, heliotrope, heliport, helix, hell, 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,