检查时用于扩张孔口的医疗器械。
specula — plural of speculum
瞭望处；观察所。
检查时用于扩张孔口的医疗器械。
A medical instrument used during an examination to dilate an orifice.
镜子,尤指望远镜中使用的反射镜。
A mirror, especially one used in a telescope.
鸭类等鸟类翅膀上明亮光泽的色斑,位于次级飞羽远端,雄鸟比雌鸟更鲜艳。
A bright, lustrous patch of colour found on the wings of ducks and some other birds, usually situated on the distal portions of the secondary quills, and much more brilliant in the adult male than in the female.
瞭望处；观察所。
A lookout place.
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