grayback是什么意思

n.灰色动物(如:灰鲸,黑头鸦,斑背潜鸭等)

1. The graybacks fought valiantly for their cause during the American Civil War.
美国内战期间，南部人为了他们的事业而英勇战斗。
2. The children were embarrassed when they found out that their friend had grayback.
当孩子们发现他们的朋友头上有虱子时，他们感到尴尬。

1. 美国内战时期指南方的南部人；2. 指患有头虱的人