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英语单词“cavity”的意思是：空洞，洞状物；读音为英 [ˈkævɪti]、美 [ˈkævɪti]，例句如下：
1. There is a small cavity in the top of the skull. 颅骨的顶部有一个小洞状物。
2. There is a brownish cavity in the toe where a bunion had been forming. 脚趾的某个地方有个棕色的洞，之前这里长过疣。
3. I couldn't wait to start my vacation, then the cavity search started. 我不禁跃跃欲试地开始了我的假期，紧接着又是所谓的全面检查。
4. In its current configuration, there's a lot of dead space inside the case, which is also full of small cavities and crevices. 在目前这个配置下，机箱内部有很多空余的空间，同时充满了小的洞状物和缝隙。
5. She noticed a dark-coloured sore on his gums and a small pocket of blood under his tongue, but there was no sign of a tooth infection and he had no cavities. 她注意到他的牙龈上有一个颜色较深的溃疡，舌头下面有一点血，但没有发现牙齿感染或蛀牙的迹象。
6. The bone itself is not affected, but there is a small cavity in the bone that needs to be filled with a cement-like substance. 骨头本身没有受到影响，但是骨头内有一个小洞状物需要用类似水泥的物质填充。
单词“cavity”是名词，主要表示一个洞状物或者空洞。在以上例句中，它分别在描述不同的情境，包括医学检查、空间配置等，体现了这个单词的广泛适用性。同时，由于它的基本含义，它在口语和书面语中都有广泛应用，特别是在描述人体结构或者物体空间分布时。
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