1Water coloured green by algae or other organic matter.
2Environmental Science. In water resource management: water that is directly derived from rainfall and used by plants or stored in the soil.
Early 17th century (in an earlier sense). From green + water.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。