但是在70年代末至80年代末，两国关系曾出现一段曲折。

但是在70年代末至80年代末，两国关系曾出现一段曲折。

ผลลัพธ์ (อังกฤษ) 1:

But late in the late 70 and 80, bilateral relations have had a period of twists and turns.

ผลลัพธ์ (อังกฤษ) 2:

But in the late 1970s to the late 1980s, there have been a tortuous relations.

ผลลัพธ์ (อังกฤษ) 3:

But in the late 70's to the late 80's, the relations between the two countries was a period of twists and turns.