The twin lights, the shifting grey and the steadfast red, mastered the Water Rat and held him bound, fascinated, powerless.

变幻莫测的灰色和坚定不变的红色，这两道光芒控制住了河鼠，使他处于动弹不得，痴痴迷迷，又无能为力的状态。

youdao

youdao

A succession of smooth, grey sandy coves was soon a memory as the track started to weave inland, darting back occasionally to the water to rinse off the heat.

不久，一连串灰色平坦的小海湾就成了回忆，火车开始驶进内陆，偶尔会驶到水边，像是要消解一下炎热。

youdao

In the painting, the water and sky are grey.

VOA: special.2010.07.25

Eligible improvements (PDF) include not only energy-saving equipment such as insulation, lighting, and HVAC systems but onsite renewable energy (rooftop PV, wind turbines, and fuel cells) and water-saving upgrades such as low-flow plumbing fixtures and grey water systems.

FORBES: California Launches Nation's Largest Clean Energy PACE Program

Among these figure water-harvesting technologies and drip irrigation, as well as technologies that recycle grey water in peri-urban agriculture.

UNESCO: World Water Assessment Programme (WWAP)

In doing this, I've got deeply involved in the full process from recycling the water from the clouds, bringing it down, filtering it, using it domestically, in low quantity and with grey water products outpouring from the house that goes straight into the crops that we are growing.

BBC: NEWS | In Depth | 2003 | World Forum | Water | Global village voices: Water