gōng / zuò / rén / yuán / fā / xiàn / shí / yàn / shì / lǐ / de / fàng / shè / yuán / xū / yào / chóng / xīn / mì / fēng

工作人员发现实验室里的放射源需要重新密封。

The staff discovered that the radiation source in the laboratory needed to be resealed.