她仍然通过儿子间接控制着公司。

She still controls the company ___indirectly, through her son.

这间接提高了生活质量，人们会感到重新充满活力。

This ___indirectly improves the quality of life and people will feel re-energised.

他通过建议其他选择间接影响了这个决定。

He influenced the decision ___indirectly by suggesting alternative options.