床沿

edge of the bed

坑沿

edge of a pit

帽沿

brim of a hat

河沿

river bank

沿小巷走去

walk along the alley

沿着路边走

walk along the side of the road

沿着河边走

walk along the river bank

世代相沿

pass from generation to generation

相沿成习

pass along until it becomes a custom

沿鞋口

put a border on the top of a shoe