Teaching is a worthwhile calling.是什么意思？

Teaching is a worthwhile calling.

教书是一种有价值的职业。

teaching

n. 教学，教义，所教的东西，学说；adj. 教学的，教导的；v. 教( teach的现在分词)，教书，训练，教育；

例句
The cure for bad teaching is good teachers, and good teachers cost money.
解决教学质量差的办法就是请好的教师，但请好的教师是需要花钱的。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

worthwhile

adj. 值得做的，值得花时间的，有价值的，合算；

例句
Their sobering conversation brought home to everyone present the serious and worthwhile work the Red Cross does.
他们发人深省的对话使在座的每个人都清楚地认识到红十字会所从事的严肃而有价值的工作。

calling

n. 呼喊，（从事某职业或活动的）欲望，职业，邀请；v. 叫( call的现在分词)，通电话，认为，估计；

例句
The workforce have recently been calling for their working hours to be reduced. Many companies have accordingly switched to a five-day week.
工人们最近一直在呼吁缩短工作时间。许多公司于是转成了一周五天工作制。