arch
/ɑ:tʃ; ɑrtʃ/ n
1 curved structure supporting the weight of sth above it, eg a bridge or the upper storey of a building 拱（用以支撑如桥梁或上层建筑重量的弧形结构）
a bridge with three arches 有三个拱的桥. =>illus at App 1 见附录1之插图, page viii.
2 (also archway) similar structure forming a passageway or an ornamental gateway 拱道; 拱门; 拱形牌坊
Go through the arch and follow the path. 穿过拱门, 沿著那条路走.
Marble Arch is a famous London landmark. 大理石拱门是著名的伦敦标志.
3 thing shaped like an arch, esp the raised part of the foot between the sole and the heel 拱形物; （尤指）足底弓. =>illus at foot 见foot之插图. arch , v
1 [Tn] form (sth) into an arch 将（某物）构成拱形; 拱起
The cat arched its back when it saw the dog. 那猫看见狗时就拱起了背.
2 [Ipr] ~ across/over sth form an arch across sth; span sth 形成拱形跨越某物; 用拱连接
Tall trees arched across the river. 高大的树木成拱形横跨过那条河.
arch / ɑ:tʃ; ɑrtʃ/ adj [attrib 作定语]
playful in a deliberate or an affected way 调皮的; 淘气的
an arch smile, glance, look, etc 淘气的微笑, 目光, 神情等.