难以捉摸 | nán yǐ zhuō mō | elusive / hard to pin down / enigmatic | |
莫测高深 | mò cè gāo shēn | enigmatic / beyond one's depth / unfathomable | |
神秘莫测 | shén mì mò cè | mystery / unfathomable / enigmatic | |
谜样 | mí yàng | enigmatic | |
深不可测 | shēn bù kě cè | deep and unmeasurable (idiom) / unfathomable depths / incomprehensible / enigmatic and impossible to predict | |
死结难解 | sǐ jié nán jiě | enigmatic knot hard to untie (idiom) / thorny problem / intractable difficulty | |
原因不明而数量大减的物种 | enigmatic decline species |