Hourglass
['aʊəglɑːs] or ['aʊɚɡlæs]
解释:
(n.) An instrument for measuring time, especially the interval of an hour. It consists of a glass vessel having two compartments, from the uppermost of which a quantity of sand, water, or mercury occupies an hour in running through a small aperture unto the lower.
巴拉克编辑