彼は臆病で暗い場所が苦手だ。
He is timid and afraid of dark places.
失敗を恐れて臆病になってはいけない。
You must not become timid out of fear of failure.
うちの犬は臆病な性格で、雷が鳴るとすぐに隠れる。
Our dog has a timid nature and hides as soon as it thunders.
自分の臆病を恥じて、彼は何も言えなかった。
Ashamed of his own cowardice, he could say nothing.