boundless; vast and obscure

blankly; vacantly; at a loss

see 茫崖市[Mang2 ya2 Shi4]

Mangnai, a county-level city in Haixi Mongol and Tibetan Autonomous Prefecture 海西蒙古族藏族自治州[Hai3 xi1 Meng3 gu3 zu2 Zang4 zu2 Zi4 zhi4 zhou1], Qinghai

at a loss (idiom)

vast and indistinct; perplexed; bewildered; at a loss

uncertain; remote; distant and indistinct; vague

boundless; vast and obscure

(slang) to get drunk (Tw)

hazy; blurred