Request a new cruising level below FL300. 443. All our air conditioning packs have malfunctioned.

请求低于 FL300 的新巡航高度。 443. 我们所有的空调机组都出现故障。

At cruising levels, there's light turbulence in about three percent of the atmosphere, moderate in about one percent, and severe in a few tenths of a percent.

在巡航高度，大约有 3% 的大气会出现轻微湍流，大约有 1% 的大气会出现中度湍流，还有几个百分点的大气会出现严重湍流。