作为公司里的低阶员工，她很少有机会参与重要决策。

As a ___low-rank staff member, she seldom gets involved in major decisions.

这家酒店使用低档材料装修以节省开支。

The hotel used ___low-rank materials for decoration to save money.

在处理大数据时，低秩矩阵可以帮助减少计算复杂度。

___Low-rank matrices can help reduce computational complexity when dealing with big data.