and keen eyes have spotted movement. 军舰鸟锐利的眼睛正在搜寻
It's quite a performance but he's not the only bird of paradise here keen to make an impression. 它的表演很精彩, 不过它并不是唯一给人深刻印象的极乐鸟
Soon they are keen to explore, 不久 它们就开始热衷于探索
She's keen to start parenting, 便急不可待地想马上尽妈妈的责任