No such mass testing has been done before at a French school, AFP news agency says. The test is voluntary.

法新社称，之前在法国学校从未有过这么大规模的检测。检测是自愿的。

youdao

No such mass testing has been done before at a French school, AFP news agency says. The test is voluntary.

法新社称，之前在法国学校从未有过这么大规模的检测。检测是自愿的。

youdao