Thirty-nine elaborate parade floats will celebrate a variety of themes, from the bicentennial of the war for Mexican independence to American major league baseball.

VOA: standard.2009.12.30

Just last fall there were some events in the world celebrating the bicentennial of Dalton's scientific achievements.

就在去年秋天，世界上还有一些活动,庆祝达尔顿科学成就,的二百年纪念日。

麻省理工公开课 - 固态化学导论课程节选