英訳:During summer breaks, he is generous with his time, leading students on Field Studies in Japan and abroad.
なるほどー!と思いました。
「自分の時間に寛大」=「時間を惜しまない」んですね。
この発想は自分はできませんでした。
If parents love their children generously with their time, the children will do the same when they become adults. I strongly believe that this will create a positive cycle of happiness.