話頭

(1)the subject matter of a conversation or discussion; "he didn't want to discuss that subject"; "it was a very sensitive topic"; "his letters were always on the theme of love"

(2)会話または議論の主題

(1)he didn't want to discuss that subject

(2)彼はその主題を議論したくなかった

(3)it was a very sensitive topic

(4)それは非常に微妙な話題だった

(5)his letters were always on the theme of love

(6)彼の手紙は、いつも愛がテーマだった