Around the 4th century AD, the site of the Oita city was once called "Bungo".

大约在公元4世纪，大分市所在地域便被称为丰后国。

In the fault zone around the Bungo Suido, at least, the entire segment is releasing a lot of strain, but without knocking down buildings, he added.

在豊后水道附近的断层中，至少整个部分正释放着巨大的压力，但是并没有震倒房屋，他又说。

An urgent investigation has been launched to determine whether the Bungo cases can be linked to Uige municipality, where transmission is known to be ongoing.

已发起紧急调查，以便确定是否可将本戈的病例与已知传播仍在持续的威热市相联系。

To get to the bottom of the slow-quake mystery, study author Hitoshi Hirose and colleagues studied seismic readings of slow earthquakes in an area around the Bungo Suido, a channel in southwest Japan.

刨根问底慢性地震的秘密。Hitoshi Hirose和他的同事们研究了发生在豊后水道(日本西南地区的海峡)附近地区的慢性地震。