quarantine 比较强调医学上的隔离，以防疾病传染。

isolation 有孤立的意思，就是不让你与别人接触，通话的意思。

相关介绍

quarantine:

1.The dog was kept in quarantine for six months.

这条狗被检疫隔离了六个月。

2. The health officials placed the ship's crew in quarantine.

卫生官员将该船的全体船员隔离，进行检疫。

3. The ship is still in rigorous quarantine.

该船仍在接受严格的隔离检疫。

4. The quarantine is now abolished.

这项检疫措施现已取消。

isolation:

1.The millionaire lived in complete isolation from the outside world.

这位富翁过着与世隔绝的生活。

2. We must on no account view problems superficially and in isolation.

我们绝不能表面地、孤立地看问题。

3. The country has again achieved international respectability after years of isolation.

几年的孤立之后，该国又重新建立了国际声望。

4. His isolation has made him blunt about the feelings of others.

他的孤立使他对别人的感情木然无知。