释义
adj.
(of the sky or weather)marked by a covering of grey cloud; dull
（天空，天气）多云的；阴的。
(in sewing)edged with stitching to prevent fraying
（缝纫用语）包缝的；包边的。
n.
cloud covering a large part of the sky
蔽天乌云。
v.
cover with clouds or shade
（以云或阴影）遮蔽
-
the pebbled beach, overcast with the shadows of the high cliffs .被峭壁的阴影笼罩的卵石海滩。
stitch over (a raw edge) to prevent fraying
锁（边）；包缝（边）
-
finish off the raw edge of the hem by overcasting it .最后包缝好衣服下摆的毛边。