Maintenance training is a vital node in a system's life circle.

维修培训是系统生命周期内的重要环节。

I 'd like to accept others' experience to extend my life circle!

吸收别人的知识经验，扩充自己的知识经验。

If one dies without becoming a child, his whole life circle is incomplete.

如果一个人不能够像孩子般的死去，那么他的整个生命不算完整。

Stakeholder theory; Life Circle Assessment; Green Supple chain management.

利益相关者理论； 生命周期评价； 绿色供应链管理。

Many young people cannot find a partner because of their narrow life circle.

许多年轻人找不到对象，因为他们的生活圈子太小了。