英語theory怎麼讀

1、theory英[?θ??ri]美[?θi??ri]，n.學說; 論; 說; 理論; 原理; 原則; (未證明的)意見; 看法; 推測;

2、[例句]Da Vinci was methodical in his research, carefully recording his observations and theories。達·芬奇搞研究井井有條，會詳細記錄觀察資料和理論學說。