认真的雪的英语说法是"serious snow"。这个词的来源是指雪的数量和密度，表明这是一场严重的雪灾。例句如下：

The weather forecast said there would be serious snow tonight.

（天气预报说今晚会有认真的雪。）

The city was shut down due to the serious snow.

（由于认真的雪，整个城市都被关闭了。）

The serious snow made driving difficult.

（认真的雪使驾驶变得困难。）