Differences in libidos are common among couples of all ages .

性欲上的差异在所有年龄段的夫妇之间都是普遍存在的。

But there some ingenious business people are using raging libidos to make them money .

但是，一些有创意的商人正在利用人们狂热的性欲为自己赚钱。

People who take anti-depressants like prozac and zoloft , drugs which increases serotonin in the brain , often have lower libidos .

服用像百忧解和舍曲林这样的抗抑郁药会增加大脑中血清素的含量，从而可能导致降低性欲。

An alternative view of the matter is that the key variable is not the libidos of the politicians but the vigilance of the agencies , public and private , that keep a squinty eye on them .

换个角度来看斯皮策的性丑闻，关键的因素不在于政客们的力比多（性的驱动力），而是公共或者私人机构的警觉心，这些机构的眼光总是瞄着那些政客们。