He stared at his own image reflected in the water.

他凝视着自己在水中的倒影。

《牛津词典》

If the two media have really different densities, like air and water, then most of the energy is going to be reflected back, very little of it will keep going and get transmitted into the new medium.

而如果这两种介质的密度相差较大，就像空气和水那样，那么大部分的能量将会折射回来，只有一小部分会继续传播进入到新的介质中。

youdao

As the small boat moved, gently along the river he was left speechless by the mountains being silently reflected in the water.

小船缓缓地沿着江面行驶，群山的倒影静静地映在水中，他说不出话来。

youdao

The water reflected the snowy-white outline of the Annapurna mountains in the distance.

BBC: Long-distance swimming in Nepal��s glacial mountain lakes

The water reflected the gray-blue of the darkening sky, and the lights of the water-pumping stations had come on, making them look like a line of floating gazebos.

NEWYORKER: Great Experiment

It was all reflected in the smooth surface of the water, coloured a coffee-black by tannins released from decaying plant life below.

BBC: Taming the heart of the Peruvian Amazon