Unit4 外刊精读知识清单-2022-2023学年高中英语人教版（2019）必修第三册

高中英语必修第三册Unit4外刊精读（含阅读练习） Can I Be an Astronaut If I Have Myopia? 如果我是近视，能成为宇航员吗？ Being an astronaut is the dream of a lot of people. After all, who wouldn’t want to look at the stars from outer space? Since having sharp vision is important for traveling through the milky way, it’s totally possible for someone with managed myopia to be an astronaut. 成为一名宇航员是许多人的梦想。毕竟，谁不想从外太空观望星空呢？既然拥有敏锐的视力对于穿越银河系非常重要，那么患有可控近视的人也完全有可能成为宇航员。 So before you buckle (扣紧) up and prepare for takeoff, make sure you have your glasses ready. 所以在你系好安全带准备起飞之前，确保你已经准备好了你的眼镜。 Can astronauts have myopia? 宇航员可以是近视吗？ Yes, NASA astronauts can have myopia and still go to space. As a matter of fact, approximately 80% of astronauts wear glasses or contact lenses (隐形眼镜) to correct some sort of vision problem. 是的，美国宇航局的宇航员可以是近视，并且可以进入太空。事实上，大约80%的宇航员都戴着眼镜或隐形眼镜来矫正某种视力问题。 approximately /əˈprɒksɪmətli/ adv [学术词] 大概；大约 To be approved for space travel, astronauts must have 20/20 vision or better, with or without correction. This means that they can see clearly, without blurriness (模糊) or double vision. 要获准进行太空旅行，宇航员必须有20/20或更好的视力，无论是否有矫正。这意味着他们可以看得很清楚，没有模糊或重影。 approve v 批准 20/20 vision 正常的视力（其衡量基准是平均人群从20英尺，约6米处可以清晰看见目标） If an astronaut has a refractive (由折射引起的) error that causes them to have blurry vision at certain distances, it must be correctable to at least 20/20. These refractive errors can be corrected or managed using glasses, contact lenses or vision surgery. They include: 如果宇航员有屈光不正，导致他们在一定距离内视力模糊，那么至少要校正到20/20。这些屈光不正可以通过佩戴眼镜、隐形眼镜或视力手术来矫正或控制。它们包括： · Myopia (nearsightedness) 近视（近视） · Hyperopia (farsightedness) 远视（远视） · Astigmatism (visual distortion at all distances) 散光（所有距离的视觉失真） · Presbyopia (age-related farsightedness) 老花眼（与年龄有关的远视） To apply to become an astronaut at NASA, you must also have or meet the following requirements: 要申请成为美国航天局的宇航员，您还必须具备或满足以下要求： U.S. citizenship 美国国籍 A degree in engineering, biological science, physical science, or mathematics 工程学、生物科学、物理科学或数学学位 At least thr