Tall and athletic : ostrich plumes and pompoms emphasise height

高大健壮：鸵鸟的羽毛和绒球象征了高度！

With time , plumes become progressively more diffuse .

随着时间的推移，烟羽逐渐弥散。

What the plumes lacked in strength , however , they made up for in number .

尽管近鸟龙的羽毛缺少强度，但是它们通过数量来弥补。

Their chicks have black bodies with bright red head and beak , and orange plumes around the neck .

幼鸟体黑，头部和喙鲜红色，颈部羽毛橙色。

Mission managers did extensive studies to make sure thespacecraft could fly safely through the plumes and not use an excessiveamount of propellant .

本任务的管理者作了广泛的研究来确保太空船可以安全飞过羽毛状喷发，并且不动用额外的推进器。