harmful

形容词 harmful:

1. injurious to physical or mental health
   同义词：noxious
2. able or likely to do harm
3. causing or capable of causing harm
4. constituting a disadvantage
   同义词：disadvantageous
5. contrary to your interests or welfare
   同义词：adverse, inauspicious, untoward
6. tending to cause great harm
   同义词：evil, injurious

1. Antitoxin is substance that acts against a poisonous substance and prevents it from having a harmful effect.
   抗毒素是抵抗有毒物质并防止其产生有害作用的物质。
2. Drunkenness is harmful to our health.
   醉酒对我们的身体有害。
3. Smoking is harmful to one's health.
   吸烟对健康有害。
4. It is generally accepted that smoking is harmful to our health.
   吸烟有害健康，这是大家公认的。
5. The new law was in a measure harmful.
   新的法律在某种程度上说是有害的
6. An injurious plant or animal, especially one harmful to human beings.
   有害动植物有害的植物或动物，尤指那些对人类有害的
7. It's harmful to your eyes to read in the bus.
   在公共汽车上看书对你的眼睛有害。
8. It is harmful to your health to drink too much.
   过量喝酒对你的身体有害。

harm.ful

adj.（形容词）
Causing or capable of causing harm; injurious.
有害的：造成或能够造成损害的；有害的

【引伸】
harm.fully
adv.（副词）
harm.fulness
n.（名词）