教书是他一生的工作。
Teaching was his life's work.
all one's life; throughout one's life
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
Nice writing!
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
教书是他一生的工作。
Teaching was his life's work.
一生健康比钱重要。
Lifelong health matters more than money.