他自年轻时就一直在与抑郁症斗争。

He has been ___battling depression since his youth.

公司正在与竞争对手争夺市场份额。

The company is ___battling with competitors for market share.

科学家们正努力寻找这种疾病的治愈方法。

Scientists are ___battling to find a cure for the disease.