The paper makes an investigation and analysis to the current situation of Heilongjiang province track and field referee team.

对黑龙江省田径裁判员队伍的现状进行调查与分析。

youdao

The paper makes an investigation and analysis to the current situation of Heilongjiang province track and field referee team.

对黑龙江省田径裁判员队伍的现状进行调查与分析。

youdao