Long-distance relationship(LDR)指双方相隔距离遥远，但却保有亲密关系的状况，也就是我们所说的“异地恋”或“远程恋爱”。没准您写作或口语就用到了。
A long-distance relationship (LDR) is typically an intimate relationship that takes place when the partners are separated by a considerable distance.
Long-distance relationship(LDR)指双方相隔距离遥远，但却保有亲密关系的状况，也就是我们所说的“异地恋”或“远程恋爱”。
Before the popularity of internet dating, long-distance relationships were not as common, as the primary forms of communication between the romance lovers usually involved either telephone conversations or corresponding via mail. However, with the advent of the Internet, long-distance relationships have exploded in popularity as they become less challenging to sustain with the use of modern technology. Technologies including cell phones, e-mail, online chatting and video conferencing have made it possible to keep in touch.
以上就是关于“异地恋”的托福词汇，大家可以将这些词汇及相关句型运用到自己的口语话题及写作例子中去。