n.挫败；败北
vt.战胜；击败；使...不能实现
He was depressed by his defeat. 失败让他沮丧。
This defeat was a powerful blow to the enemy. 这次失败是对敌人的有力的打击。
The news of army's defeat cast a gloom over the town. 军队败北的消息给小城蒙上了一层忧郁。
They are still wailing over their defeat. 他们仍在为比赛失利而悲叹。
用作及物动词 (vt.)It was a sound strategy to defeat the enemy. 那是战胜敌人的良策。
The naval captain defeated Napoleon in the battle of Trafalgar in 1805, and stopped him from invading England. 这位海军将领在1805年的特拉法格海战中击败了拿破仑的军队,从而阻止了他入侵英国。
I believe nothing can defeat you. 我相信什么都打不垮你的。
The test completely defeated me. 这个测试完全难倒了我。
defeat既作类名词，也可作抽象名词，如a defeat（一次挫败）和in defeat（挫败）；
defeat后接不同的介词时，表示不同意思。例如his defeat of the enemy表示“他打败敌人”，his defeat by the enemy表示“他被敌人打败”，而his defeat表示“他被别人打败”。
v.(动词)defeat的基本意思是用武力或智谋“打败”“使屈服”,表示“占上风”,含有可能只是暂时挫败或牵制对方的意味。引申可以表示“难住”。
defeat是及物动词,接名词或代词作宾语,可用于被动结构。
n.(名词)defeat用作名词的基本意思是表示“战胜”的行为。从胜方角度看可表示“战胜”; 从败方角度看可表示“战败”。具体译法根据上下文特别是谓语动词而定。
defeat表示“失败”时,是不可数名词; 表示“失败的事例”时,是可数名词。
