thermals

Daydreaming in summer, looking upwards, he noticed that the larger birds, hawks and eagles, could stay aloft for longer, riding thermals with supreme elegance without flapping their wings.

在消夏的时候，仰望天空，他注意到大一点的鸟儿，例如鹰和隼，能乘着热气流在高空中不拍打翅膀极其优雅地逗留很久。

As paragliders and glider pilots, they soar like hawks higher and higher, using air heated by the sun, called thermals, to rise high in the sky.

作为滑翔伞和滑翔机的驾驶员，他们利用太阳带来的空气热动力，也称为上升暖气流，像鹰一样越飞越高。

This paper analyses the differences between the old standards and the 10 new trade standards of FZ/ T3022-2004 Knitted Thermals, and points out the disadvantages of the ten new standards.

分析了FZ/T3022-2004针织保暖内衣等10项行业新标准与老标准的差异，指出了新标准存在的不足。