The mysterious phenomenon of energy transformation remains to be an unsolved enigma.
这种神奇得能量转换现象至今还是个不解之谜。

Is it enough to break the Enigma ciphers used by Nazi Germany in the Second World War
破解二战时德国纳粹使用的谜机密码就够了吗？

Got a riddle, puzzle, conundrum, enigma or whatever you have that can twist our brains.
有各种谜语或难题让大夥儿绞尽脑汁吗？

The origin of distillate liquor in ancient China still an unsettled enigma for experts.
我国古代蒸馏酒得起源，众说纷云，莫衷一是。

Yes, the enigma will utter its word, the sphinx will speak, the problem will be solved.
是的，谜底终将被揭开，斯芬克司终将说话，问题终将得到解决。

Yet, the biological basis for this sensitivity of angiogenesis to copper has been an enigma.
但是, 血管发生对铜敏感的生物学基础仍然是一个谜。

The fact that the diamonds seem to span such a large age range is an enigma, the authors say.
作者说, 这些钻石看起来年代跨度如此大, 简直是一个谜。

Enigma have achieved a staggering popularity with their fusion of classical and ambient music.
谜取得他们的古典音乐和环境融合惊人的知名度。

He is an enigma not outright friendly or forthcoming, but he works surprisingly well on a team.
他难以捉摸并不坦率友好, 乐于助人。

But he always comes to mind as a kind of moral enigma, because I thought he was a very good guy.
但我常常认为他是个道德迷题，因为我觉得他是个好人。

In the 18 years since they were discovered, hightemperature superconductors have remained an enigma.
在高温超导体发现后的18年, 它仍然是个谜。

Got a riddle, puzzle, conundrum, enigma or whatever you have that can twist our brains. Post it here!
有各种谜语或难题让大夥绞尽脑汁吗？请大胆发表。

It is regarded as an enigma in the realm of finance with explorative discussions aroused from different aspects by scholars both at home and abroad.
国内外学者从不同方面对封闭式基金折价现象展开了讨论。