词汇	balloon observation
释义	balloon observation 气球观测
随便看	explanation in english explanation in pedagogy explanation in statistics explanation in trial explanation is called for Explanation: Is Ceres an asteroid or a planet Explanation: Is Ceres an asteroid or a planet? explanationism explanationist explanationists explanation mechanism explanation method explanation mode of positivism explanation mode of process theory explanation module explanation obligation explanation of explanation of a bill explanation of a word explanation of compiling explanation of cultural thoughts explanation of curvature explanation of diversity explanation of error Explanation of Fengshui by Master Neo