be veiled in mystery; be enveloped in mystery; be rapt [shrouded; wrapped] in mystery; mysterious and hard to guess; so subtle [mysterious] as to be difficult [hard] to guess what comes next
He was very frail, and his eyes were really uncanny . 他孱弱异常，眼神真可以说是神秘莫测。
2.
Saudi arabia obscures its vulnerability by opaqueness . 沙特阿拉伯人以其神秘莫测来掩饰其脆弱。
3.
I could visualize the scene at the time and mitchell's inscrutability . 我可以想象得出当时的情景和米切尔的那种神秘莫测的表情。
4.
From the great oak, i could see its summit ahead of me, unknown, inviting . 从老橡树望去，迎面就是这座山的顶峰，神秘莫测，充满诱惑力。
5.
It will enable scientists to obtain samples of the mysterious layer which lies immediately below the earth's crust . 科学家们能从紧接地壳下面的那个神秘莫测的地层取样。
6.
A terrible, closed look came over his face, as though he were keeping the number on the bill a secret from him and me . 他脸上现出可怕、神秘莫测的神色，好象要把票面额向他自己、也向我保密似的。
7.
She recognized the colossal indifference of nature, not hostile, even kindly and friendly, so long as the human ant-swarm was submissive, working with it, hurrying along at its side in the mysterious march of the centuries . 她看出大自然真冷酷无情得骇人听闻，只要蚂蚁群似的人类肯百依百顺，跟它合作，在一世纪一世纪神秘莫测的进程中，跟它并肩前进，它就并不存心与人为敌，甚至可以说得上很和气，很友好。
8.
Based on a ture story balto will touc . . 他决定离开父母，展开神秘莫测的历险. .
9.
His inscrutable face does not show what he is thinking 他那神秘莫测的面孔看不出在想什么。
