The two sisters are so similar that it's almost impossible to tell one from the other.

这两姐妹如此相似，以至于几乎无法区分。

It is hard to tell the twin brothers one from the other.

我无法分辨出那对双胞胎兄弟。

Two tribes of the wasps entered Yunnan, one from the Himalayas and the other from Burma.

有两支昆虫进入云南, 其中一支来自喜马拉雅山,另一支来自缅甸.

The new study involved two different viruses isolated from a single patient - one from the lungs, the other from the upper respiratory system.

研究中采用的两种病毒分离自同一病人的肺脏和上呼吸道。

That is what I want to be able to do-separate one from the other and have a stand alone icon .

这就是我希望能够做的，单独的一个与其他并有独立的图标。

Sichuan dialect sounds much the same as Hubei dialect. It is sometimes difficult to tell one from the other.

四川话和湖北话在北方人听起来很相似，有时难以区别。

The valley in which he found himself divided and sub-divided into many gorges, which were so like each other that it was impossible to distinguish one from the other.

他觉得他所在的这个山谷，一时变成千沟万壑，处处十分相似，简直无法辨认。他沿着一条山沟走了一英里多路，来到一个涧水淙淙的所在。

There may be a temptation to treat the biosphere holistically and the species that compose it as a great flux of entities hardly worth distinguishing one from the other.

也许有些人会走捷径，用一种整体的视角来看待整个生物圈,将其中的物种看成是个体的流动,无须区分出它们之间的细微差别。

And sometimes it is difficult to tell one from the other, for a piece of good expository narrative can also be experiential and aesthetic with its lively and vivid tales.

有时候两者甚至难以区分，因为有的说明记叙文情节生动，也极富欣赏价值。