In extreme circumstances, researchers run multiple trials within one phase at the same time.

在极端情况下，研究人员会同时在一个阶段内进行多项试验。

And they would consume little power, since energy need be used only when a pixel has to be flipped from one phase to another.

而且它消耗的功率更少，因为这种材料只需要在变相的时候消耗能量。

Americans have many rites of passage (or important things that one does to move from one phase of one's life to another phase) when becoming adults.

即将成年的美国人有很多过渡仪式（或一个人从人生的一个阶段迈向另一个阶段会做的重要事情）。

The extension of American enterprise southward into Latin America, of which the operations in the Caribbean regions were merely one phase, naturally carried Americans into Mexico to develop the natural resources of that country.

——美国企业向南延伸至拉丁美洲，其中在加勒比地区的业务只是其中的一个阶段， 自然而然地把美国人带入了墨西哥， 开发该国的自然资源。

These intermolecular forces, while relatively weak, are why phases of matter exist, and, in fact, it's the relative weakness of these forces that allows a substance to change from one phase to another fairly easily.

这些分子间力虽然相对较弱，但却是物质相存在的原因，事实上，正是这些力的相对较弱使得物质很容易从一个相转变为另一个相。

Also though, for a diagnosis, signs of these disturbances must be ongoing for at least 6 months, meaning they're likely in one phase or another for a period of 6 months, but there must be at least one month of active-phase symptoms.

同时，为了确立诊断，这些异常表现必须持续至少6个月；在这6个月中，求诊者可能处于任何一个分期，但至少有1个月须显现急性期症状。