black adj.黑的；不加牛奶的；很脏的；愤怒的；令人沮丧的；邪恶的；阴沉的；机密的；黑色幽默的n.黑色；黑人；黑色物v.抵制；(使)变黑
双语例句
If the gene therapy could make the white hair of an albino mouse turn black, it should also help banish gray hair - without dyes. 如果基因疗法能使患白化病的老鼠毛发变黑，那不用染发剂而使用基因疗法也应该有助于消除灰白头发。
The possibility of tinkering with the scalp's genes to prevent the onset of graying gained momentum four years ago when scientists made an albino mouse turn black in one patch. 四年前，科学家已经可以使患白化病的老鼠的一小块皮毛变黑，这为研究修补头皮基因来防止头发变灰的可能性提供了动力。
