例句與造句

1. Last week, Dynegy said it would exit energy trading and marketing, the business on which it made its name.
2. With an approximate path of a proton through the object, one can then identify the voxels through which the proton passed, and the difference between entry and exit energy indicates the energy collectively deposited in these voxels.
3. It's difficult to find exit energy in a sentence. 用exit energy造句挺難的