捷足先登的移民

The name Oklahoma comes from two Choctaw Indian words, okla, which means "people," and humma, which means "red." In 1889, Congress opened up 2 million acres for white settlement (it was previously open only to Native Americans who were forced to leave their homelands), and the first of a number of land runs began.

奥克拉荷马源自两个巧克陶族印第安字，一为代表「人」的 okla ，另一个则是代表「红」的 humma 。1889年时，国会开放了2百万畂地让白人移民定居(本来这块土地只开放给那些被迫离开既有家乡的美国原住民居住)，但少部分土地早就已经有人捷足先登了。

The name Oklahoma comes from two Choctaw Indian words, okla, which means "people," and humma, which means "red." In 1889, Congress opened up 2 million acres for white settlement (it was previously open only to Native Americans who were forced to leave their homelands), and the first of a number of land runs began.

奥克拉荷马源自两个巧克陶族印第安字，一为代表「人」的 okla ，另一个则是代表「红」的 humma 。1889年时，国会开放了2百万亩地让白人移民定居(本来这块土地只开放给那些被迫离开既有家乡的美国原住民居住)，但少部分土地早就已经有人捷足先登了。

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。