1 sentence

1. 这台仪器的反应时间缩短到了纳秒级别。

   zhè tái yí​qì de fǎn​yìng shí​jiān suō​duǎn dào le nà miǎo jí​bié.

   The response time of this instrument has been reduced to the nanosecond level.

   Source: Dong Chinese Dictionary