The Chinese also launched weatherballoons near their theodolites to measure atmospheric temperature and pressure changes to better estimate refraction errors.
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。
2
A few weeks later, Larry bought 42 one-meter diameter weatherballoons.
几个星期后，拉里买了42个直径为1米的气象探测气球。
3
As he watched jets fly overhead, an idea came to him to use weatherballoons to fly.