1. 他們已經到了必須彼此分手的地步。
   They have reached the point where they have to separate with each other.
2. 他們三人彼此相處愉快；一個已婚，一個仍是光棍，而另一個則已有了女友。
   They three get along well with one another; one is married, another is still a bachelor, and the other has a girl friend.
3. 這些爭論彼此勢均力敵。
   These arguments cancel each other out.
4. 他們是彼此爭奪第一名的老對手。
   They are old rivals vying with each other for first place.
5. 他們表達了彼此之間的愛慕。
   They show reciprocal affection to each other.
6. 他們彼此憎恨。
   They hate each other.
7. 爭論是不可避免的，因為他們彼此非常厭惡。
   An argument was inevitable because they disliked each other so much.
8. 他們彼此不和。
   They are at enmity with each other.

彼的英語翻譯：

此的英語翻譯：