查询词典 westward

In the nineteenth century, westward expansion of United States territory began, upon the belief of Manifest Destiny, in which the United States would occupy all the North American land east to west, from the Atlantic to the Pacific Oceans.

在19世纪，向西扩大美国境内开始时，相信定命运，其中美国将占据所有北美国的土地东到西，从大西洋到太平洋。

Under President Jefferson, the country expanded westward with the purchase of the Louisiana territory and the Lewis and Clark expedition.

杰佛逊总统在位时主导美国向西扩张，不但购买了路易斯安那地区的土地，同时还派遣路易士和克拉克率队探索西部地区。

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。