漏洞

The Chinese word 漏洞 (lòudòng) is composed of two characters: 漏 (lòu) and 洞 (dòng). The character 漏 originally meant "to leak" or "to drip", and it is often used in the context of water. The character 洞 originally meant "a cave" or "a hole", and it is often used in the context of the earth. When these two characters are combined, they create the word 漏洞, which literally means "a hole that leaks". In a figurative sense, 漏洞 can be used to refer to a weakness or a flaw in something, such as a plan or a system. For example, the sentence "这个计划漏洞百出" means "This plan is full of flaws".