gumption

1. N-UNCOUNT If someone has the gumption to do something, they are brave enough to do it. 魄力[oft 'the' N to-inf]

He suspected that deep down, she admired him for having the gumption to disagree with her. 他认为，她内心深处其实钦佩他有魄力反对自己的意见。

2. N-UNCOUNT If someone has gumption, they are able to think what it would be sensible to do in a particular situation, and they do it. 头脑[非正式]

Surely anyone with marketing gumption should be able to sell good books at any time of year. 任何有营销头脑的人无疑都应该能在一年中任何时候卖掉好书。