評論
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Snow
雪
Snow comes from clouds.
雪從云里來。
And it is made of snowflakes.
它是由雪片形成的。
As snowflakes grow bigger and heavier in the cloud, they fall toward the ground.
當云中的雪片變得更大、更重時，它們就會落向地面。
All snowflakes are six-sided ice crystals.
所有的雪片都是六邊的冰晶。
They all look different.
但它們形狀各異。
In order for children to have snowball fights, the air temperature has to be not too cold.
為了能讓孩子們打雪仗，空氣的溫度不能太低。
If the air is too cold, the snow will not stick together very well.
要是太低的話，雪就不能很好地粘在一起。
