自然圈是地球表面由大气圈,水圈和土壤圈所构成·三圈中适合生物生存的范围称为生物圈·大多数生物集中生活在大气,水体和陆地相邻的区域·
这就是说,研究环圈量子重力学的理论学家认为无需先作出时空的几何假设,便能表述自然定律。
This means that theorists working on it believe the laws of nature can be stated without making any prior assumptions about the geometry of space and time.
有些人将长毛象的灭绝归罪于改变植物圈的自然温度攀升,这印证了现代人对气候变化的担忧;
In an echo of modern concerns about climate change, some blame their fate on a natural upswing in temperature that altered vegetation.
然而,不管是工作带来的慢性压力让你变得神经兮兮,还是长时间坐在办公室让你的腰围粗了一圈,你都可以用非药物的自然方法来舒缓工作压力。
But whether chronic work-related stress is eating at your nerves or ballooning your waistline, there are natural solutions with no toxic side effects that you can use to relax the pressure.
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