本 Total English - 上級 - ユニット 1 - レッスン 2

a suggestion or thought about something that we could do

アイデア, 考え

a piece of evidence that leads someone toward the solution of a crime or problem

手がかり, ヒント

from one's memory, without spending time to carefully consider or think

without any preparation or prior thought

何気なく, 即興で

to know about somebody or something because one has received information or news about them

〜について知る, 〜を聞いたことがある

to be well-informed about or completely familiar with something

(of a person) feeling confident about something being correct or true

確かな, 自信のある

(of a person) having no doubt about something

確信している, 自信がある

by relying only on one's memory

to have very good knowledge or understanding about someone or something

to a degree that is very little and close to nothing

difficult to see, hear, smell, etc.

かすかな, 微かな

feeling completely sure about something and showing that you believe it

確信している, 確実な