在外太空旅行可不是件輕鬆的事！缺乏重力、輻射暴露、長時間隔離……這些嚴苛的環境對人體健康造成極大挑戰。不過，隨著科學研究的持續進展，人類離登陸火星又更近了一步！
📚 本集文法學習重點：
1️⃣ 未來條件句（Conditional clauses to talk about the future）
例句：Provided that the scientific community continues to research and address these health challenges, the success and safety of future missions beyond Earth's orbit will only continue to improve.
2️⃣ 形容詞 + enough 的用法（Adjective + enough）
例句：Space travel presents numerous challenges for human health as the body is not adapted enough to the harsh conditions of space, such as microgravity and exposure to high-energy radiation.
Story text:
Space travel presents numerous challenges for human health as the body is not adapted enough to the harsh conditions of space, such as microgravity and exposure to high-energy radiation. These conditions cause significant physiological changes, including bone density loss, muscle atrophy, and cardiovascular issues. The lack of gravity also affects bodily fluids, leading to facial swelling and vision problems. Additionally, astronauts are exposed to radiation that can increase the risk of cancer, neurodegenerative diseases, and immune system dysfunction. Psychological stress, sleep disturbances, and mood disorders are common due to long periods of isolation and confinement. Despite these risks, space exploration is crucial for advancing knowledge and preparing for long-term missions, such as to the moon or Mars. Provided that the scientific community continues to research and address these health challenges, the success and safety of future missions beyond Earth's orbit will only continue to improve.
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