但所有学生对安全用血知识了解较少。

But all students know little about safely using blood.

youdao

以往所犯的安全性缺失，都可以让您更了解这部分的知识。

Become knowledgeable about security mistakes that you made in the past.

youdao

以往所犯的安全性缺失，都可以让您更了解这部分的知识。

Become knowledgeable about security mistakes that you made in the past.

youdao