Xinjiang, which has glorious cotton planting history, is the biggest commodity cotton base in the country. The annual output approximately composes 35% in the country, occupying about 8% in the world.

新疆植棉历史悠久，是全国最大的商品棉基地，棉花年产量约占全国的35%，占世界的8%左右。

youdao

It could be useful to denote things such as the sun's mass (2.2 hellatons) and energy output (approximately 0.4 hellawatts).

ECONOMIST: Scientists measure a few yoctonewtons for the first time