Anyhow, with whitewash from the wall on my forehead, my obstinacy was adamantine.

无论如何，我的额头上墙上粉饰，我的固执是坚定的。

With the exception of Brexit, on which it is likely to remain adamantine, Downing Street may even reverse itself on some big questions.

唐宁街除了很可能在英国脱欧这一问题上保持坚定立场以外，它甚至可能在一重大问题上改变立场。

It is hooped round with a hollow cylinder of adamant, four feet yards in diameter, placed horizontally, and supported by eight adamantine feet, each six yards high.

它被一个直径为四英尺码的空心金刚石圆筒，平放置，并由八个金刚石脚支撑，每个脚高六码。

Zeus sent along his son, Hephaestus, with the  son's blacksmith hammer to fasten the chain, made of an unbreakable substance called adamantine,   so that the Titan could never be able to escape.

宙斯派他的儿子赫菲斯托斯 (Hephaestus) 带着儿子的铁匠锤来系紧链条，这条链条由一种牢不可破的物质制成， 称为金刚石， 因此泰坦永远无法逃脱。