英语语法分析

Yarn hairiness and twist unevenness affect fabric quality seriously.

纱线毛羽与捻度不匀严重影响织物质量。

Leaf texture and hairiness and flower head size are the highly variable characters.

叶毛羽和花头大小、质地是参差不齐字。

One suggestion is that our ancestors shed hairiness to keep cool when venturing across the hot savannahs of Africa.

一种观点认为，当我们的祖先冒险穿越非洲炎热的萨凡纳地区时，为了保持周身的凉爽，他们选择自己脱去毛发。