简体中文版 | English Version | EBooks(電子書)

EnMama.net

Keystone

['kiːstəʊn] or ['ki'ston]

解釋/意思:

(noun.) the central building block at the top of an arch or vault.

編輯:马丁--From WordNet

解釋/意思:

(n.) The central or topmost stone of an arch. This in some styles is made different in size from the other voussoirs, or projects, or is decorated with carving. See Illust. of Arch.

希拉里校對

About(关于我们)|Sitemap(网站地图)

Copyright © 2018 EnMama.net. All rights reserved.