abacus在六世纪被发明在中国的翻译：Abacus in the Sixth century was invented in China 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

abacus was invented in the sixth century in China

Abacus in the Sixth century was invented in China

abacus is invented in six centuries in China

abacus was invented in China in 6 Century

Abacus in the Sixth century was invented in China