About
The character 洞 is a phono-semantic compound, with the water radical 氵 on the left indicating its semantic category and the component 同 on the right providing the phonetic value. The radical suggests the original meaning related to water, specifically a swift current or deep pool. Over time, the sense shifted from the water itself to the physical cavities, such as grottos or underground holes, formed by water erosion. Consequently, 洞 now commonly denotes a cave or a hole.
Etymology Hide
Example Sentences Hide
这个山洞非常深。
洞穴里住着蝙蝠。
衣服上有个破洞。
他发现了一个树洞。
洞悉真相需要时间。
这个漏洞必须尽快修补。
河水穿过岩洞流向大海。
通过这个小洞，你能看到外面的世界。