USAF

abbr 缩写 = United States Air Force 美国空军.

Urdu, urea, ureter, urethra, urge, urge sb to do, urge sb. on, urged, urgency, urgent, urgently, uric, urinal, urinary, urinate, urine, urn, us, USA, usable, usage, use, use up, used, used to, used to do, useful, usefully, usefulness, useless, uselessly, uselessness, user, user-friendly, usher, usherette, USN, USS, USSR, usual,