ring mountain的用法和樣例：
例句
- The circular mountain on the moon is very famous, and is the keystone of the scientists' research.
這座月球上的環(huán)形山很有名，是科學(xué)家研究的重點(diǎn)。 - Since no other volcano lava or pozzolana are found nearby, so we may exclude the possibility that ringed mountains are volcano craters.
而由于相關(guān)地帶沒(méi)有發(fā)現火山熔巖或火山灰分布，可以排除環(huán)形山是火山口的可能。
