cost的過去式過去分詞怎麼寫

短語

1、cost price 成本價;出廠價格;成本價格;原價

2、Implicit Cost 隱含成本;隱成本;隱性成本;內含成本

3、sunk cost 沉沒成本;沉澱成本;沈沒成本;[會計]旁置成本

4、Average cost [會計]平均成本;平均成本法;[經]平均代價;[經]平均費用

例句

1、This course is limited to 12 people and costs $150.

這門課程限招12人，費用爲$150。

2、Painted walls look much more interesting and don't cost much.

粉刷過的牆壁看上去更有趣，要價也不高。

3、Did you reckon in the cost of the taxi?

你把坐計程車的費用計算在內了嗎?

4、They deducted the cost of the broken window from his allowance.

他們從他的津貼中扣除損壞窗戶的`費用。

5、We have to weigh the cost of the new system against the benefits it will bring.

我們必須權衡一下起用新系統所需的成本和它將帶來的效益。