Japonya'da yedi yılı boyunca, ciddi olarak Japonca çalıştı.
- During his seven years in Japan, he studied Japanese in earnest.
O ciddi olarak çalışmaya başladı.
- He began to study in earnest.
Samuel was stern, serious and deeply in earnest. He seldom smiled and never laughed. He was uncompromisingly religious, conscientious and morally unbending.