1. This is my fifteenth visit to Europe.
    这是我第十五次访问欧洲。

2. The temple which the archaeologists explored was used as a place of worship from the fifteenth century B. C. until Roman times.
    考古工作者考察的这座庙宇从公元前15世纪直到罗马时代一直是祭祀祈祷的场所。

3. The body of one statue was found among remains dating from the fifteenth century B. C.
    其中有一尊雕像，她的躯体是在公元前15世纪的历史文物中发现的，

4. Leonardo Da Vinci, who lived in Italy during the fifteenth century, enjoyed every possible challenge.
    里奥纳多·达·芬奇生活在十五世纪的意大利，他喜欢各种可能的挑战。