Whether such allotropes exist remains to be seen.

种同素异体是否存在还有待观察。

The boffins behind it think that new physical forms of the element, known as allotropes, may offer ways around both the partial-combustion and the toxicity problems.

究人员认为，种元素的新式，即同素异体，可能会提供解决部分燃烧和毒性问题的方法。

Allotropes of an element can have very different properties from each other (graphite and diamond, for example, are both allotropes of carbon).

一种元素的同素异体可能彼此具有非常不同的性质(例如，石墨和金刚石都是碳的同素异体)。