I bought a bag of flour
一袋───A bag;面粉───flour
She ate a bag of chips.───她吃了一袋炸土豆条。
Here's your change. Would you like a bag?───这是找给您的零钱。您要个袋子吗？
She packed her few belongings in a bag and left.───她把她的几件东西装进包里便离开了。
The big Klaus went into a bag with rocks to reach the bottom of the river as fast as possible.───大克劳斯钻进口袋，为了能尽快沉到河底还在口袋里装了些石头。
I take out a bag of candy from my backpack and hold it out to the children.───我从背包里拿出一包糖分给孩子们。
She was wearing a thin dress. She was holding a bag of sweets. She had nothing else. Her arms and legs hurt a bit, but she could walk.───她穿着很薄的裙子，拿着一袋糖。她没有其他东西了。她的胳膊和腿有一点疼，但还能走路。
He packed a few things into a bag.
He packed a bag with a few things and was off.
The old man conjured up a bag of silver coins from his pocket.
He stole a bag from the room.
All the children were given a bag of goodies - mostly sweets and toys.