两国于十二月重新建立了正式外交关系。

Formal diplomatic relations between the two countries were re-established in December.

《牛津词典》

1979年1月1日，中美正式建立外交关系。

January 1, 1979: China and the US formally established diplomatic ties.

youdao

1979年1月1日，中美正式建立外交关系。

January 1, 1979: China and the US formally established diplomatic ties.

youdao