Translation of "underage" into Chinese

What is the situation of girls and underage women in this regard?

另请说明涉及女孩和未成年少女时如何处理这一情况。

ISAF headquarters has, in cooperation with UNAMA, monitored incidents of underage recruitment into the Afghan forces and other violations of children’s rights.

安援部队总部同联阿援助团合作,监测阿富汗部队招募年幼儿童入伍以及其他侵犯儿童权利的案例。