1. 影响;使改变
    If something affects a person or thing, it influences them or causes them to change in some way.

    e.g. Nicotine adversely affects the functioning of the heart and arteries...
           尼古丁会对心脏及动脉功能造成损害。
    e.g. More than seven million people have been affected by drought.
           已有超过700万的民众受到旱灾的影响。

2. （疾病）侵袭，感染
    If a disease affects someone, it causes them to become ill.

    e.g. Arthritis is a crippling disease which affects people all over the world.
           关节炎是一种会危害全人类健康的致残性疾病。

3. （感情上）打动，震动，使悲伤（或怜悯）
    If something or someone affects you, they make you feel a strong emotion, especially sadness or pity.

affect的翻译

    e.g. The divorce affected Jim deeply...
           离婚对吉姆打击很大。
    e.g. Gregor loved his sister, and her loss clearly still affects him.
           格雷戈尔爱他的姐姐，她的去世显然仍令他悲伤不已。

4. 假装；佯装；装出…的样子
    If you affect a particular characteristic or way of behaving, you pretend that it is genuine, or natural for you.

    e.g. He listened to them, affecting an amused interest...
           他装作饶有兴致地听他们说话。
    e.g. Ms. Redgrave affects a heavy Italian accent.
           雷德格雷夫女士假装带有浓重的意大利口音。