an ascending air parcel cools as it gains altitude.
上升的气块随着高度增加而冷却。
we can assume the air parcel is an isolated system.
我们可以假设该气块是一个孤立系统。
the stability of the atmosphere depends on the air parcel temperature.
大气的稳定性取决于气块温度。
when an air parcel rises, its pressure decreases rapidly.
当气块上升时，其压力迅速降低。
if the air parcel is warmer than the environment, it will continue to rise.
如果气块比周围环境暖，它将继续上升。
moisture condenses within the humid air parcel.
水分在这个潮湿的气块内凝结。
meteorologists use the air parcel model to predict storms.
气象学家使用气块模型来预测风暴。
the concept of a hypothetical air parcel simplifies atmospheric physics.
假设气块的概念简化了大气物理学。
adiabatic cooling occurs as the air parcel expands upward.
当气块向上膨胀时，会发生绝热冷却。
the density of the air parcel is determined by its temperature and pressure.
气块的密度由其温度和压力决定。
sink the air parcel back to its original level to measure stability.
将���块下沉回原始高度以测量稳定性。
an ascending air parcel cools as it gains altitude.
上升的气块随着高度增加而冷却。
we can assume the air parcel is an isolated system.
我们可以假设该气块是一个孤立系统。
the stability of the atmosphere depends on the air parcel temperature.
大气的稳定性取决于气块温度。
when an air parcel rises, its pressure decreases rapidly.
当气块上升时，其压力迅速降低。
if the air parcel is warmer than the environment, it will continue to rise.
如果气块比周围环境暖，它将继续上升。
moisture condenses within the humid air parcel.
水分在这个潮湿的气块内凝结。
meteorologists use the air parcel model to predict storms.
气象学家使用气块模型来预测风暴。
the concept of a hypothetical air parcel simplifies atmospheric physics.
假设气块的概念简化了大气物理学。
adiabatic cooling occurs as the air parcel expands upward.
当气块向上膨胀时，会发生绝热冷却。
the density of the air parcel is determined by its temperature and pressure.
气块的密度由其温度和压力决定。
sink the air parcel back to its original level to measure stability.
将���块下沉回原始高度以测量稳定性。
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