无从捉摸 meaning in English

there is nothing (in his speech) to lay hold of

Troubles and other realities took on themselves a metaphysical impalpability .
一切麻烦和所有现实都一变而为玄妙空幻、无从捉摸的东西。
If there were any one that one could apply to with a probability of gaining such a clue as that , it might be of essential consequence
要是我们有这样的人可以请教，得到一些线索，那是大有用处的。目前我们还是无从捉摸。
Near the horizon the sun was smouldering dimly ， almost obscured by formless mists and vapors ， which gave an impression of mass and density without outline or tangibility
天边，太阳从似乎漫无边际的浓雾和水汽中挤出一丝光晕，给人造成一种朦朦胧胧、无从捉摸的印象。