Các câu ví dụ cho từ harmless

1. Sputnik V is based on vector technology, using a harmless virus that introduces the Covid-19 protein into human cells, helping stimulate the immune system response.

2. Epidemic culling and harmless treatment has basically finished in Liaoning, Henan, Jiangsu and Zhejiang provinces, where a total of 37,271 hogs were culled, while another 1,264 hogs were put down by Saturday in Anhui province.