zonal ray

例句：

1. 1.The zonal winds blow from the northwest to the southeast.
   纬向风从西北吹到东南。
2. 2.The zonal variation in temperature is due to the different altitudes.
   温度的纬向变化是由于不同的海拔造成的。
3. 3. The zonal circulation is responsible for the movement of water and air masses.
   纬向环流负责水和空气团的运动。