England has a really good contact tracing system.

英格兰有着完善的接触者追踪系统。

Early on in the pandemic, the prime minister promised there would be a world-beating test and trace system.

在疫情早期，首相承诺将会有一个世界一流的检测和追踪系统。

South Korea, with its effective test and trace system, has reported its highest number of new infections since March swelled by imported cases.

拥有有效的检测和追踪系统的韩国报告了自3月份以来最高的新增感染人数，原因是输入性病例激增。