Mom! The dew point is 79.5 degrees. - Okay.

妈妈！点是26.3摄氏度。 - 好。

For instance, the air temperature, humidity and dew point will change significantly.

如气温情况，还有湿度、点。

The humidity is 90% with a dew point of 79.5 degrees.

湿度是90%，点是26.3摄氏度。

When the dew point drops in the middle of the night, it is perfect time for pythons.

当半夜降时，正是蟒蛇出没最佳时机。

The dew point is a lot more useful.

点更有用。

So at the dew point, our metaphorical sponge would be full and a cloud can be born.

所以在点，我们海绵 会充满，云会诞生。

And as this ejects out of the plane there's a little probe at the bottom that is going to collect all of our temperature, dew point, pressure, things like that.

当它喷射出飞机时，在底部有一个小探测器，它会收集所有温度、点、压力，诸如此类参数。

Only when the air cools down past a certain point — called the dew point — does this breaking-apart slow down enough for little clusters of water molecules to grow into droplets.

只有在空气冷却到特定温度——即霜点温度——才能令断键过程减缓到可以让一小撮水分子凝结成水滴。

And while there are millions of five-molecule clusters in a golf-ball-sized volume of air at dew point, odds are that only one of those clusters will grow to a size of ten.

在霜点温度，一个高尔夫球体积大小空气中存在无数由 5 个分子组成水汽团，其中只有一个水汽团最终能聚到 10 个分子。

Clouds form when saturated air reaches  its dew point, the temperature at which, under a given set of barometric conditions, water  vapour condenses into liquid due to cooling air or increased saturation from an adjacent water  source.

当饱和空气达到点时， 云就会形成。点是在给定气压条件，水蒸气由于冷却空气或邻近水源饱和度增加而凝结成液体温度。