Visual tracking employs feedback loops that function to keep the eyes on a target... Encyclopædia Britannica, Inc. Structure of the human eye. The outer portion consists of the white protective sclera... © Merriam-Webster Inc.
s feet of elderly persons. It must be appreciated that the two portions can be activated independently; thus, the orbital portion may contract, causing a furrowing of the brows that reduces the amount oflightentering from above, while the palpebral portion remains relaxed and allows the eyes to...
a human eye一个人眼 many human eyes许多人眼 the human eye 人类的眼睛(区别于动物的）
Partial decussation is an arrangement that serves the needs of frontally directed eyes and permits binocularvision, which consists in the fusion of the responses of both eyes to a single object—more loosely, one speaks of the fusion of the retinal images. In many lowermammals, with laterall...
eye,→ open somebody’s eyes (to),→ in the public eye,→ make sheep’s eyes at,→ a sight for sore eyes,→ in the twinkling of an eye,→ keep a weather eye on,→ pull the wool over somebody’s eyesコロケーションcolourbrown/blue/grey/greenBoth their children have blue eyes.dar...
When it comes to looking at the night sky,too much light makes it difficult for us to watch some of life's most wonderful views:stars,planets and even galaxies(星系).According to scientific research,about 2,500 stars can be directly seen by the human's eyes without u...
Human sexual activity - Reproductive System, Development, Change: One’s anatomy and sexuality change with age. The changes are rapid in intra-uterine life and around puberty but are much slower and gradual in other phases of the life cycle. The reprodu
(NHGRI) policies. Informed consent was obtained from participants if they were enrolled antemortem or their legal guardians if post-mortem. All human eyes used for sequencing and histological studies were collected 3–14 hours post mortem through the Rapid Autopsy Program, Massachusetts General ...
each child’s libido becomes successively focused on various parts of the body (in addition to people and objects) in the course of his or her emotionaldevelopment. During the first postnatal year, libido is initially focused on the mouth and its activities; nursing enables the infant to derive...