throw away
1．discard； lose or let slip by foolishness or neglect抛弃；因愚蠢或疏忽而失去或放弃
He has thrown away a good opportunity．他已经失去了一个良好的机会。
You are throwing away your chance of becoming a success．你在错过成功的机会。
2．fail to use弃而不用
My advice was thrown away upon him．我的忠告被他当作耳边风。
3．use in a foolish or wasteful manner浪费
You are throwing your money away，buying such useless things．你买这些没有用的东西是在浪费钱。
He thinks nothing of throwing away a thousand dollars at the gambling house.他在赌场里一掷千金满不在乎。