Shy and timid

• Quiet and unassertive in manner

怯生生的、胆小的

• 举止安静、不爱出头

Of a dull grayish-brown color, especially of hair or fabric

灰褐色、暗淡的，尤指头发或织物的颜色

Very quiet or stealthy, like a mouse

非常安静或偷偷摸摸，像老鼠一样

Infested with mice; abounding in mice

老鼠成灾的；到处都是老鼠的