吴楚：泛指长江中下游。原指登上南京城，一眼望去，越远越觉得天下垂，除见苍天之外，空无所有。现也比喻一无所见。
the sky hangs low over the Yangtze, empty as far as the eye can see (idiom); nothing to see to the broad horizon
天(tiān)
低(dī)
吴(wú)
楚(chǔ)
()
眼(yǎn)
空(kōng kòng kǒng)
无(wú)
物(wù)
