ubiquity

n [U] quality of being ubiquitous 普遍存在; 无处不有.

typographer, typographical, typography, tyrannical, tyrannically, tyrannize, tyrannise, tyranny, tyrant, tyrany, tyre, tyre (US tire), tyro, tzar, U, U, u, U-boat, U-turn, UAE, UAR, ubiquitous, UCCA, UDA, udder, UDI, UDR, UEFA, UFO (also ufo), ugh, ugli, ugliest, ugliness, ugly, ugly-looking, UHF, UHT, UK, ukulele, ulcer, ulcerate, ulceration,