英語沙龍十年合集珍藏版第二輯How to keep your eyesight sharp-如何保持敏銳的視力
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How to keep your eyesight sharp
１. Boost your beta carotene1) intake. Eat lots of oranges and yellow fruits and vegetables such as spinach.
２. Eat other carotenoids too. Beta carotene is only one of more than ５００members of the carotenoid family. A study also suggests that carotenoids found in green leafy vegetables（such as broccoli2） and kale3)）may help prevent vision loss.
３. Stay active. A study found that people who bicycled four times a week for ４０minutes had a ２０percent drop in eye pressure.
４. Block the sun. Some studies link long-term exposure to ultraviolet4) rays（UV）to cataract5) formation. To protect your eyes, wear sunglasses with a special coating that locks UV light.
５. Stop smoking. According to a study, people who smoke 35 or more cigarettes a day have a 63 percent greater risk of developing cataracts.
如何保持敏銳的視力
１. 增加β-胡蘿卜素的攝入量。 食用大量的柑橘、黃色水果和蔬菜, 如菠菜。
２. 同時(shí)攝入其他類胡蘿卜素。 β-胡蘿卜素在５００多個(gè)成員的類胡蘿卜素屬中, 只是其中一員。一項(xiàng)研究報(bào)告指出, 在綠葉蔬菜（如花椰菜和甘藍(lán)菜）中發(fā)現(xiàn)的類胡蘿卜素, 可能有助于防止視力下降。
３. 經(jīng)?；顒?dòng)。 一項(xiàng)研究發(fā)現(xiàn), 一星期騎自行車４次共４０分鐘的人, 眼壓降低２％。
４. 遮擋陽光。有些研究認(rèn)為白內(nèi)障的形成與眼睛長期暴露在紫外線下有關(guān)?？纱麇冇蟹雷贤饩€膜的太陽鏡來保護(hù)眼睛。
５. 戒煙。 研究表明, 與不吸煙的人相比, 一天抽３５支煙或更多的人, 得白內(nèi)障的危險(xiǎn)高６３％。
NOTE 注釋：
carotene [5kArEti:n] n. [生化]胡羅卜素
broccoli [5brCkEli] n. 椰菜
kale [keil, kel] n. 羽衣甘藍(lán)
ultraviolet [5QltrE5vaiElit] adj. 紫外線的, 紫外的
cataract [5kAtErAkt] n. 白內(nèi)障
