单词 pentagon 释义 pentagon, a. and n. Geom.|pntgn|Also 7 -one.[In A, ad. L. pentagn-us, a. Gr. ά- pentagonal, five-cornered, f. - penta- + -- from stem of angle. In B, ad. L. pentagn-um, Gr. ά, the neuter adj. used as n. Cf. F. pentagone n. (13th c....
单词 pentagon 释义 pentagon n 1 [C] geometric figure with five sides and angles 五角形; 五边形. 2 the Pentagon (a) [sing] the five-sided building near Washington that is the headquarters of the US Department of Defence and the US armed forces 五角大楼(美...