spinning / rotating / turning

戦闘力: fighting strength, fighting ability

先駆者: trailblazer, pioneer

新選組, 新撰組: Shinsengumi (special police force organized by the shogunate during the Bakumatsu period)

(informal) the lady doth protest too much; a girl's protests should not necessarily be taken at face value.

大統領: president of a country

投票所: polling place

統計学: the field of statistics

湯桶読み: A reading pattern for certain kanji compound words, using the native Japanese kun'yomi for the first kanji, and the Chinese-derived on'yomi for the second kanji.

格闘技: martial arts or spectator combat sports