Bob's influence on the committee slowly decreased after he caused the accident.在鲍勃造成这起事故之后，他对委员会的影响力逐渐降低。

deduce V.推断

I couldn't deduce whether he thought the idea was a good one or not.我无法断言他是否会认为这是一个好主意。

default v.不履行（某种责任）；违约

People who default on their mortgage repayments may lose their houses.抵押贷款违约者可能会失去他们的房子。

defeat v.击败

The debate team defeated its rival.辩论队战胜了他们的对手。

defect n.缺点，瑕疵

I bought these shoes cheaply because they have a slight defect.我以很便宜的价格买到了这双鞋，因为鞋上有一点瑕疵。

defence n.防卫；防卫物

The town’s defences are weak and it may fall to the enemy.这个城市的防御非常薄弱，可能会沦陷。

definite adj.清楚的；明确的

Roger needs to know the definite arrival time so he can meet his friend on time at the airport.罗杰需要知道确切的抵达时间，以便准时到机场接 朋友。

delegate n.代表 委派，授权

She was our delegate at the party conference.她是我们在党内会议中的代表。

I’ve been delegated to organize the weekly meetings.我被委派组织每周的会议。

delete v.删除

The editor deleted the incorrect sentence from the manuscript.编辑删除了手稿中的错误句子。

deliberate adj.①深思熟虑的②故意的

We made a deliberate decision to live apart for a while.我们作出了分居一段时间的慎重决定。

While many people think that the plane crash was an accident, Tom is convinced that it was a deliberate plan.虽然有许多人都认为这次空难是一场事故，但汤姆坚信这是一个蓄谋已久的阴谋。