2 sentences

1. 1964年夏季奥林匹克运动会在东京举办。

   1964 nián xià​jì'ào​lín​pǐ​kè​yùn​dòng​huì zài dōng​jīng jǔ​bàn.

   The 1964 Summer Olympic Games were held in Tokyo.

   Source: CCMatrix

2. 1980年夏季奥林匹克运动会曾在莫斯科举办。

   1980 nián xià​jì'ào​lín​pǐ​kè​yùn​dòng​huì céng zài mò​sī​kē jǔ​bàn.

   The 1980 Summer Olympics took place in Moscow.

   Source: CCMatrix