n. 灰色, 暗淡
a. 灰色的, 灰白的, 面色苍白的, 年老的, 老练的, 阴沉的
v. (使)变灰色
英文释义
n. a neutral achromatic color midway between white and black
n. the SI unit of energy absorbed from ionizing radiation; equal to the absorption of one joule of radiation energy by one kilogram of matter; one gray equals 100 rad
n. English radiobiologist in whose honor the gray (the SI unit of energy for the absorbed dose of radiation) was named (1905-1965)
n. English poet best known for his elegy written in a country churchyard (1716-1771)