第三人称复数:antagonists
1. 拮抗物:凡是能使另一种化学物的生物学作用减弱的物质称为拮抗物(antagonist). 在毒理学或药理学中,常以一种物质抑制另一种物质的毒性或生物学效应,这种作用也称为抑制作用(inhibition). 例如,阿托品对胆碱酷酶抑制剂的拮抗作用;
2. 拮抗剂:受体(receptor)一般是镶嵌于细胞膜或细胞内、能与某种化学物质(如递质、调质、激素)发生特异结合的特殊生物分子. 只发生特异性结合,但使递质不能发挥生物学效应的物质则称为拮抗剂(antagonist)或受体阻断剂,两者统称为配体(ligand).
3. 对抗剂:合成鸦片的一大特性是可制备具有不同程度的对抗剂(antagonist). 纯的对抗剂不但不产生吗啡的药理性质,并且可以抑制所有吗啡的效雁. 那欧克酮(naloxone)是一典型的纯吗啡对抗剂. 其他对抗剂大多具有不等程度的致效剂(agonist)活性;
1. 对手;敌手
Your antagonist is your opponent or enemy.
e.g. Spassky had never previously lost to his antagonist.
斯帕斯基以往从未输给过他的对手。
1. Will Smith will play the antagonist and is also one of the film's producers.
2. Fernandez specifically took aim at the newspaper Clarin, a frequent antagonist.
noun
1. a drug that neutralizes or counteracts the effects of another drug
2. antagonist
2. a muscle that relaxes while another contracts
e.g. when bending the elbow the triceps are the antagonist
3. someone who offers opposition