noun
first oil crisis
Refers specifically to the 1973 oil crisis triggered by the OPEC oil embargo.
第一次石油危機は1973年に起こった。
The first oil crisis occurred in 1973.
Refers to the 1979 oil crisis, distinct from the first.
Compound of 第一次 (first) + 石油 (oil) + 危機 (crisis).