These reports reached the village, of course, but people only half believed them, for the grandmother was infirm and old.

当然，这些消息传到村子里，但人们只是半信半疑，因为奶奶上了年纪会犯迷糊。

youdao

The entire population, including the young, the old, and the infirm, might enjoy a higher level of mobility without requiring advanced driving skills.

社会全体成员，包括老老少少与体弱者，也许都不需习得娴熟的驾车技巧就能较为自由地奔驰了。

youdao

Old and infirm, Henry was hounded from castle to castle, but what finally broke him was the discovery that John had betrayed him and gone over to Richard's side.

年老体弱的亨利真是处处城堡不得安生，但是最后让他心碎的是约翰居然反水到了理查这边。

youdao

Of course it may well be the case that there is no alternative to the old and infirm running nations in which the average age keeps falling to the 20s and lower, but it is a debate that will not go away.

BBC: African viewpoint: Death on the continent

Every year influenza kills 36, 000 people in the U.S., mostly the very young, very old and very infirm.

FORBES: Broken Eggs

Dr Cook-Deegan was one of the authors of a study that showed a significant risk of adverse selection in the market for long-term-care insurance (the sort bought by the young in order to ensure they have nursing care when they become old and infirm).

ECONOMIST: Genetics, medicine and insurance