the tip of the tongue touches the roof of your mouth
for example, when you say "annai" in Japanese, the tip of your tongue doesn't touch the roof of your mouth, but when you say "anshin", it does
「舌の先を口の中の上にくっつける」＝ the tip of the tongue touches the roof of your mouth
ボキャブラリー
舌の先 ＝ the tip of the tongue
口の中の上 ＝ the roof of your mouth
「例えば日本語の「あんない」では「ん」では舌を上につけてませんが「あんしん」ではしたがついてますよね」＝ for example, when you say "annai" in Japanese, the tip of your tongue doesn't touch the roof of your mouth, but when you say "anshin", it does
イギリス 
