Tennis has had a surplus of comebacks.是什么意思？

Tennis has had a surplus of comebacks.

网球球员复出的例子比比皆是.

tennis

n. 网球（运动）；

例句
...a tennis ball.
网球

has

v. 有( have的第三人称单数 )，（亲属关系中）接受，拿，买到；

例句
...the operation a patient has had.
病人做过的手术

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

surplus

adj. 过剩的，多余的；n. 剩余额，公积金，顺差，盈余；

例句
After 10 minutes the surplus material is washed away and any remaining deposit examined with ultra violet light.
10分钟后剩余的物质被冲洗掉，任何残留的沉淀物则会用紫外线进行检测。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

comebacks

n. 恢复，复原( comeback的名词复数 )；

例句
The comeback of all comebacks began in the 54 th minute.
复出所有复出,开始在第54分钟.