n. 拱门, 拱形, 足弓
vt. 使成弓形
vi. 拱起, 成弓形
a. 主要的, 调皮的, 傲慢无礼的, 狡猾的
英文释义
n. a curved shape in the vertical plane that spans an opening
n. a curved bony structure supporting or enclosing organs (especially the inner sides of the feet)
n. a passageway under a curved masonry construction
n. (architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it