名词
中文翻译：海拔控制
同义词：
['height control', 'altitude regulation']
例句：
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1. The pilot must maintain a constant altitude to avoid collisions.
飞行员必须保持恒定的飞行高度以避免相撞。
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2. The mountaineers carefully controlled their altitude during the ascent.
登山者在攀登过程中小心地控制了他们的海拔高度。
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3. The aircraft's altitude was monitored by the ground controllers.
飞机的海拔高度由地面控制员监测。