one...the other
这表示两者中的一个。。。另一个
the other:他者;另一个;其他
例句:
The other one was much too expensive.
另一个太贵了。
I don't have any strong feelings about it one way or the other.
我对此既不特别喜欢,也不特别讨厌。
I can't tell one twin from the other.
我分不出双胞胎中谁是谁。