早春时节，气温的变化通常会让很多中国人感到不舒服。
In early spring, the changing temperature usually makes a number of Chinese people uncomfortable.
中国还在经纬仪附近发射了气象气球来测量大气温度和压力变化，以更好地估计折射误差。
The Chinese also launched weather balloons near their theodolites to measure atmospheric temperature and pressure changes to better estimate refraction errors.
秦玉琳。2012。中国东北夏季极端气温变化特征及其与大气环流的关系[D]。南京信息工程大学。
Qin Yulin. 2012. Variation of extreme temperature in Northeast China and its relations with atmospheric circulation [d]. Nanjing University of Information Science and Technology.
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