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- The mouth of a fool boils forth follies. 蠢人嘴里说出来的尽是蠢话。
- A lion would fit into the mouth of a blue whale. 蓝鲸一口就可以吃掉一头狮子。
- So does a proverb in the mouth of a fool. 箴言在愚昧人的口中也是如此。
- The plug in the mouth of a bottle (especially a wine bottle). 用来堵住瓶子口的木塞（多指酒瓶子）。
- The mouth of a river where it flows into a larger body of water. 河口河流流入更大水体处的入口
- An arm of the sea that extends inland to meet the mouth of a river. 海湾海洋伸进大路与河口相遇的分支
- A spring that is the source or head of a stream. 源头，源泉一条溪流的源头或源泉
- A bowl-shaped depression at the mouth of a volcano or geyser. 碗状凹陷火山口或喷泉口的碗状凹陷处
- The sand has silted up the mouth of the river. 泥沙已把河口堵住了。
- A bowl - shaped depression at the mouth of a volcano or geyser. 碗状凹陷火山口或喷泉口的碗状凹陷处
- A big rock blocked the mouth of the cave. 一块大石头堵住了洞口。
- Into the mouth of a bad dog often falls a good bone. 恶狗总能吐出好骨头。
- At the mouth of the river is a large area of marsh. 这条河流的入口有一大块湿地。
- the mouth of a spring 泉眼
- The spring constant of a spring. 弹簧的弹性常数。
- A similar deposit at the mouth of a tidal inlet, caused by tidal currents. 三角洲海湾入口处三角形沉淀区域，由潮汐形成
- The mouth of the cave was so narrow that we had to edge in. 洞口太窄了，我们只能侧着身子走进去。
- A usually triangular alluvial deposit at the mouth of a river. 三角洲河口常见的三角形沉淀淤积地带
- It is a common saying which we often hear in the mouths of the vulgar. 这是我们常听一般人们口中所说的流行语。
- A fringe of toothlike appendages surrounding the mouth of a moss capsule. 孢蒴齿围在苔藓或苞蒴口周围的皱褶状或齿状附加物
