This week we hear from footballer, David Beckham. David is from London and we hear how he feels about the Olympics being in his hometown. Join Natalie in this week's video to hear from David and learn ...

周一 · 知古通今 | 周二 · 牧夫专栏 周三 · 太空探索 | 周四 · 观测指南 周五 · 深空探测 | 周六 · 茶余星话 | 周日 · ...