小牙

Columbus thereafter ventured out across the Caribbean Sea. He found the Lesser Antilles, explored the coast of Cuba, discovered Jamaica, and finally returned to Spain in 1496. On a thrid voyage in 1498 Columbus found Trinidad and explored the northern coast of South American.

此后哥伦布冒险横渡加乐比海，他发现了小安的列斯群岛，探寻了古巴海岸线，还发现了牙卖加，最后于1496年回到西班牙。1498年哥伦布第三次出航，发现了特立尼达，探访了南美的北部海岸线。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。