我们乘坐的班机穿越厚厚的云层，在科克机场上空盘旋准备降落的过程中，似乎有一丝不祥的预感。

Descending through thick clouds towards Cork airport brought a slight sense of foreboding.

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气象局警告说，在周五的大部分时间，云层都会在英国上空徘徊，由此可能导致禁飞令进一步延长。

The Met Office warned that the cloud is likely to linger over Britain for most of Friday, which could cause the no-fly restrictions to be extended further.

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TC4工程将研究出关于含冰卷云的各种资料，这种云层是在大气上层中通过受热量驱使或对流的暴风雨变化过程中形成的，而此暴风雨也是与热带暖水海洋上空的状况密切相关。

The TC4 project will generate new data on the icy cirrus clouds that are formed in the upper atmosphere by heat-driven, or convective, storm systems that coalesce over warm waters in the tropics.

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