I've never seen such a polite clerk.是什么意思？

I've never seen such a polite clerk.

我从未见过这样有礼貌的店员。

ve

abbr. Venezuela 委内瑞拉；

例句
Conclusion The TCD abnormity of VE occurs mainly in intracervical artery system.
结论病毒性脑炎脑血流动力学异常改变以颈内动脉系统为主.

never

adv. 从不，从来没有，一点也不，决不，<口>不会…吧，没有，不曾；

例句
The public never had faith in his ability to handle the job...
公众从来不相信他有能力胜任这一职位。

seen

v. 看见( see的过去分词 )，观看，领会，考虑；

例句
Holiday spots have seen a dramatic revival and tourist chiefs are competing for a slice of the action.
各个度假点重又呈现出一派兴旺景象，旅游业的龙头老大们都在争着分一杯羹。

such

det. 这样的，那样的，如此，这样；

例句
...abstract principles such as justice...
正义等抽象原则

polite

adj. 有礼貌的，有教养的，文雅的，上流社会的，应酬的，客套的；

例句
She had been surprised at how amiable and polite he had seemed.
看到他如此和蔼可亲、彬彬有礼，她非常惊讶。

clerk

n. 店员，办事员，职员，书记员，<古>牧师，教士；vi. 当职员，当销售员；

例句
She was offered a job as an accounts clerk with a travel firm.
她得到一份在旅行社当记账员的工作。