被子的用法和样例：
例句
-
玛丽留下几块布准备做一床被子。
Mary saved up pieces of cloth to make a quilt. -
羽绒被一种经常有可换洗被罩的被子，可以用来代替被褥或床单
A quilt, usually with a washable cover, that may be used in place of a bedspread and top sheet. -
母亲昨天补了一床被子。
Mother pieced a quilt yesterday. -
他买了一床厚被子过冬。
He bought a heavy quilt for the winter.
