We can expect clear skies, but it will be quite cold, with temperatures hovering around the thirty degree mark.

预计今天一天都有好天气，但是会比较冷，温度会维持在30华氏度左右。

The temperature is not expected to reach the 20 degree mark in the next few days.

【mark】在未来几天里，气温不会超过 20 度。

The Middle East is the most affected area. But scientists expect even more areas to break the 50 degrees mark in the future.

中东是受影响最严重的地区。但科学家预计，未来将有更多地区突破50度大关。

But the climate scientists said they do not believe the world's temperatures will pass the 1.5 degree mark for good until the 2030s.

但气候科学家表示，他们认为全球气温在本世纪30年代之前不会永远超过1.5度。