n. 扬抑格, 长短格

[ noun ]
a metrical unit with stressed-unstressed syllables
<noun.communication>

Trochee \Tro"chee\, n. [L. trochaeus, Gr. ? (sc.?), from ?
running, from ? to run. Cf. {Troche}, {Truck} a wheel.]
(Pros.)
A foot of two syllables, the first long and the second short,
as in the Latin word ante, or the first accented and the
second unaccented, as in the English word motion; a choreus.