be concerned to担心;关心
be concerned to do认为做某事重要
be concerned to do sth把做某事视为自己的事
piping concerned to feedwater pump给水泵相关管道
The concerned to restore the本可挽回的
According To Concerned Papers根据相关文献
provide training to concerned people对相关人员进行设备维修保养的培训
issues to be concerned注意问题
aspects to be concerned反