grayback /'^reibæk/ 📖 中文释义 n. 灰色动物(如:灰鲸, 黑头鸦,斑背潜鸭等) 📘 English Definition(英文释义) n a dowitcher with a grey backn a sandpiper that breeds in the Arctic and winters in the southern hemisphere ← grayanotoxin GrayBalance →