求翻译：粉笔，是老师讲课的帮手；黑板，是老师教知识的宝地；三尺讲台，是老师展现风采的舞台；年复一年，春夏秋冬，见证了老师的无私奉献！是什么意思？

Chalk, a teacher lectures helper; blackboard, teacher knowledge is the treasure; three feet of the podium, the teachers show the style of the stage; year after year, seasons, witnessed the teacher's dedication!

Chalk, a teacher's helpers; blackboard lectures are taught knowledge of Po; 3 ft rostrum, is that the teacher show charisma of stage; year after year, spring, summer, fall and winter, bears witness to the selfless dedication of teachers!

The chalk, is a helper who teacher teaches; The blackboard, is teacher teaches the knowledge the treasure trove; Three feet platforms, are teacher unfold the elegant demeanor the stage; Year after year, spring, summer, fall, and winter, testimony teacher's selfless offer!

Chalk, is the teacher's helper; Blackboard, are taught the treasure of knowledge; three feet of the rostrum, a teacher show style stage; year after year, the seasons, witnessed the dedication of teachers!

Chalk, is the teacher's helper; Blackboard, are taught the treasure of knowledge; three feet of the rostrum, a teacher show style stage; year after year, the seasons, witnessed the dedication of teachers!