overarch
(vt.)在…上做拱(vi.)成拱形
O·ver·arch v. t. & i. To make or place an arch over; to hang over like an arch. “Brown with o'erarching shades.”
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overarch
v 1: be central or dominant; "This scene overarches the entire
first act"
2: form an arch over; "Big rocks overarch the stream" [syn: arch
over]