extracting造句

We must find economical methods for extracting oil from shale.
我们必须找到从页岩中采油的经济方法.

She was extracting a crisp roll from her purse.
她正从钱袋里掏出一卷钞票.

Who would clean a bone before extracting all available information from it?
谁在提取有用信息前洗过这骨头?

• #extracting