北京国家网球中心：
Ah, the Beijing National Tennis Center! It's a beautiful complex located in the Chaoyang District of Beijing, China. The center was built in 2007 for the 2008 Summer Olympics and is now a popular venue for tennis tournaments and events. The main stadium, called the Diamond Court, has a seating capacity of over 15,000 and has hosted some of the biggest names in tennis, including Rafael Nadal, Novak Djokovic, and Serena Williams. Have you ever been there?
天津网球队：
哦，你是想了解天津的网球队吗？我可以帮你查一下相关信息。据我所知，天津市拥有一支职业网球队，名为“天津女排”，该队成立于1998年，曾经多次参加国内外各项比赛并获得不少荣誉。不过，关于天津市是否还有其他的业余或半职业网球队似乎需要进一步的调查。如果你需要更多的信息，请告诉我。