n.金属镜(镜齐；窥镜)
In fact, it is a combination of anastomat and rectal speculum. 它实际上是直肠镜与吻合器的一种结合物。
Then, insert the speculum gently into the ear canal. 然后，慢慢的把检查镜插入耳道.
Its specula reflection weakened while scattering reflection reinforced. 此时其镜面反射能力减弱，漫反射能力增强。
Both sexes have grey wings with black primaries and a white speculum. 所有的澳洲森林鸭都是灰色翅膀，主翼羽为黑色，还有白色的斑点。
You will be aware of a support (speculum), which helps to hold your eye open. 你会感受到一个撑子（扩张器），它可以保持你的眼睛睁开。
An instrument consisting of a tube or speculum equipped with a light,used to examine the rectum. 直肠镜由带灯的管筒或窥镜组成的仪器，用于检查肛门
n.推测；投机；沉思
n.投机者；投机商人；思索家
adj.推测的；推理的；思索的；投机的
