Most tenons also have shoulder cuts on the top and bottom edges.

大多数榫头除了在长边方向有榫肩，在两个短边方向也有榫肩。

youdao

When a curtain is hung by using the utility model, the folds and the bottom edges of the curtain are regular and beautiful.

采用本实用新型悬挂窗帘，窗帘的皱折和底边整齐、美观。

youdao

While the top and bottom edges are straight, the sides gently taper from front to back, widening to a flat 7.8mm surface at the phone's thickest point.

ENGADGET: Panasonic Eluga review Mobile

The system also has more or less the same book-inspired shape as Lenovo's U-series Ultrabooks, meaning when the notebook is closed, the top and bottom edges protrude ever so slightly beyond the sides, sort of like a hardcover shell cradling a spine full of pages.

ENGADGET: blogger-avatar

The anodized aluminum chassis curves around to cradle the LCD on the left and right, but it's flat on the top and bottom, with edges exhibiting the subtle chamfering that appears to be all the rage these days.

ENGADGET: iPod nano review (2012)