Her hair hung straight down, lank from the rain.她的头发淋了雨水很平直地垂了下来。She had lank hair and sallow skin.她头发平直,皮肤发黄。His hair was lank and greasy and looked like it hadn't been washed for a month.他的头发平直稀疏还油乎乎的,看起来好像有一个月没洗了。He had long, lank, stringy hair.他长着一头又长又直的细发。