她迈着大步穿过公园，看起来很自信。

She walked across the park with long ___strides, looking very confident.

这项新技术在节能减排方面取得了重大进展。

The new technology has made significant ___strides in energy saving and emission reduction.

近年来，我国在高铁技术领域取得了巨大进步。

Our country has made significant ___strides in high-speed rail technology in recent years.