That's really eye-opening news, since the Appalachian Mountain Range is, of course, thousands of kilometers to the east of the Grand Canyon.
这真是个让人大开眼界的消息，因为阿巴拉契亚山脉当然在大峡谷以东数千公里处。
2
Diabetes, especially when the blood sugar levels are above the safe range, causes changes in the eye that can result in cataracts.
糖尿病，特别是当血糖水平升至安全范围之上时会引起眼内的变化，而这些变化最终将导致白内障。
3
At left, you can see that most digital cameras struggle when there are very bright brights and very dark darks in the same photo; they don’t perceive as wide a range of brightness as your eye does.