In very small amounts (say, a few teaspoons), and if the blood is free from pathogens (such as the many blood-borne diseases), blood might not harm you. Beyond that, watch out.

极少量的血譬如说，几茶匙，如果的血液里没有病原体如许多血液传染的疾病。

youdao

So watch out for these 9 poisonous plants, and know how they could harm or even kill you.

所以要小心这9种有毒的植物，知道它们是怎么伤害你，甚至是杀死你的。

youdao

They think the students who use the telephonewill play games, watch movies, send messages and so on, even during the class, which will do harm to them.

他们认为学生会用手机来玩游戏，看电影和发短信等等，甚至在课堂上也这样，这会给他们带来伤害。

youdao

Bell, who had a history of self-harm, was on suicide watch and was meant to be monitored every 15 minutes.

BBC: Prison officers in 'resign' call

But people should weigh the risk of that outcome against the harm of allowing each incoming administration to decide what everyone can and cannot watch.

ECONOMIST: Content regulation