lanugo的复数形式怎么拼写

Babies shed a layer of downy , slender hairs ( lanugo ) before or just after Birth.细毛,在出生前或出生后不久便脱落.During the fifth month, downy hairs ( lanugo ) cover the Body and the skin becomes less transparent.第五个月时, 身体长出绒毛状的毛发,皮肤...

lanugo的音标：lanugo的英式发音音标为：[lə'nu:gəʊ]lanugo的美式发音音标为：[lə'njugoʊ]...

n.胎毛，汗毛，柔毛...