time-capsule（n.）
1938, in reference to one "deemed capable of resisting the effects of time for five thousand years preserving an account of universal achievements" that was "embedded in the grounds of the New York World's fair." See time (n.) + capsule (n.). Considered by some at the time to be ballyhoo.
Jones [archaeologist of A.D. 5139] potters about for a while in the region which we have come to regard as New York, finds countless ruins, but little of interest to the historian except a calcified direction sheet to something called a "Time Capsule." Jones finds the capsule but cannot open it, and decides, after considerable prying at the lid, that it is merely evidence of an archaic tribal ceremony called a "publicity gag" of which he has already found many examples. [Princeton Alumni Weekly, April 14, 1939]
该词起源时间：1938年