第766天 cost 作名詞

• cost 作爲名詞，表示 價格，成本，費用

The cost of bread has increased.
麪包的價格已經上漲了。
The cost of living is much higher now than it was two years ago.
現在的生活成本比兩年前高得多。
The total cost of this picnic was about 200 yuan.
這次野餐的全部費用大約200元。

短語：

1. at all costs 意爲 無論如何，不惜任何代價
   I must get this book at all costs.
   無論如何，我必須得到這本書。
2. at the cost of sth. 意爲 以犧牲某事物爲代價
   She saved her little brother at the cost of her own life.
   她以犧牲自己的性命爲代價，救回了弟弟。