This clock is a collector's item.

　　這座鐘是珍藏。

　　He earned his living as a tax collector.

　　他以收稅為業。

　　He became a ticket collector at Waterloo Station.

　　他在滑鐵盧車站當上了一名檢票員。

　　Joseph Smith was a voracious book collector.

　　約瑟夫·史密斯是個如饑似渴的藏書家。

　　As they guffawed loudly, the ticket collector arrived

　　他們正哈哈大笑的時候，檢票員到了。