搜索关注在线英语听力室公众号:tingroom,领取免费英语资料大礼包。
(单词翻译)
Like a theater curtain, a slit1 pupil can close as much as necessary to prevent too much light from entering the eye. For humans and other animals active mainly in the daytime, visual sensitivity is not as important as the ability to see small details in bright light. So the eyes of humans, lizards2, ground squirrels, and most birds have a design suited for operation in bright light without the special protection of slit pupils. In dim light, our eyes are not as sensitive as those of nocturnal animals. Of all pupil shapes found in vertebrates — animals with backbones3 — round pupils are the most common. Non-circular pupil shapes found in vertebrates include not only the vertical4 slits5 familiar to us from cats’ eyes, but also horizontal slits, crescents, heart shapes, and keyhole shapes.
收听单词发音
1
slit
|
|
| n.狭长的切口;裂缝;vt.切开,撕裂 | |
参考例句: |
|
|
|
2
lizards
|
|
| n.蜥蜴( lizard的名词复数 ) | |
参考例句: |
|
|
|
3
backbones
|
|
| n.骨干( backbone的名词复数 );脊骨;骨气;脊骨状物 | |
参考例句: |
|
|
|
4
vertical
|
|
| adj.垂直的,顶点的,纵向的;n.垂直物,垂直的位置 | |
参考例句: |
|
|
|
5
slits
|
|
| n.狭长的口子,裂缝( slit的名词复数 )v.切开,撕开( slit的第三人称单数 );在…上开狭长口子 | |
参考例句: |
|
|
|
本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎 点击提交 分享给大家。