To most of his friends and family, including his sister Gertrude, who was born in 1903, he was known simply as "Rabi", which was pronounced "Robby".
但他的家人和朋友──包括在1903年出生的妹妹格德魯德──都直接叫他做“拉比”，讀作“羅比”（Robby）。