在他强有力的领导下，团队取得了巨大成功。

Under his strong ___leadership, the team achieved great success.

这家公司通过创新和质量赢得了市场领导地位。

The company gained market ___leadership through innovation and quality.

市长因其在危机期间的有效领导而受到赞扬。

The mayor was praised for his effective ___leadership during the crisis.