principle

US /ˈprɪnsəpəl/

UK /ˈprɪnsəpl/

A2 初級TOEIC
n. (c./u.)名詞 (可算/不可算)原則
I live by the principle that life should have meaning
n. (c./u.)名詞 (可算/不可算)原理
The equivalence principle says that small things fall at the same speed as big things
n. (c./u.)名詞 (可算/不可算)原理
He has high moral principles.
n. (c./u.)名詞 (可算/不可算)法則
The experiment demonstrated the principle of conservation of energy.
n. (c./u.)名詞 (可算/不可算)行動規範
She's a woman of principle.

動画字幕

DNAの発見が世界と私の人生を変えた|BBC Ideas (How the discovery of DNA changed the world – and my life | BBC Ideas)

05:55DNAの発見が世界と私の人生を変えた|BBC Ideas (How the discovery of DNA changed the world – and my life | BBC Ideas)

紙が黄色くなるのはなぜ?#aumsumum (Why do papers turn yellow? plus 9 more videos.. #aumsum)

16:19紙が黄色くなるのはなぜ?#aumsumum (Why do papers turn yellow? plus 9 more videos.. #aumsum)