1. 灰色动物(如:灰鲸, 黑头鸦,斑背潜鸭等)：archegonial jacket 颈卵器套 | grayback 灰色动物(如:灰鲸, 黑头鸦,斑背潜鸭等) | non verbal 非用言语的
2. 灰色动物：gray-headed 老年的 | grayback 灰色动物 | graybeard 老人
3. 灰鲸/黑头鸦/南军的士兵：gray-scale /灰阶的/ | grayback /灰鲸/黑头鸦/南军的士兵/ | graybeard /老人/土制酒壶/
grayback
noun
1. a sandpiper that breeds in the Arctic and winters in the southern hemisphere
Synonym: knot greyback Calidris canutus
2. a dowitcher with a grey back
Synonym: greyback Limnodromus griseus