求翻译：他十二岁那年父亲去世，从此开始了独立的劳动生活，先在印刷所学徒，当过送报员和排字工，后来又在密西西比河上当水手和舵手。是什么意思？

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He was 12 years old when his father died, and that was the beginning of an independent life of manual labor, first as an apprentice in the printing, when a newspaper and typesetting and fooled, and later in Mississippi River sailor and Navigator.

His 12 year old of that year father died, from this time on started the independent work life, in the printing shop apprentice, has worked as first the delivery boy and the type-setter, afterwards was swindled in the Mississippi river the sailor and the helmsman.

He was 12 years old his father died that year, began an independent working life, the first apprentice in the printing, worked as a Messenger and typesetting, and later get sailor and helmsman of the Mississippi River.

Father passed away that year of years old of 12 of his, began the independent work life from then on, the apprentice in the printery, worked as delivery boy and composing worker, act as sailor and steersman on the Mississippi later first.