ubiquitous element造句

例句与造句

1. Sulphur, a ubiquitous element in the lower atmosphere was identified from the outset as a predominant component in the stratospheric aerosol .
   在底层大气中处处存在的元素硫从一开始就被认为是平流层气溶胶的主要成分。
2. It's difficult to find ubiquitous element in a sentence. 用ubiquitous element造句挺难的