Perhaps to the elderly and infirm, but...

这种事可能发生在体弱多病的老家伙们身上。

She keeps talking about her mother being infirm. But I'm infirm. Why doesn't she think about that?

她总说她的母亲如何年老体弱，我还年老体弱呢，她怎么没想到？

Pray, do not frighten my horse! exclaimed the infirm driver.

请不要吓到我的马！年迈的车夫叫道。

My mother is old and infirm. You couldn't make her leave?

我母亲是个柔弱的老人。你们难道没办法叫她走？

Beth cherished them all the more tenderly for that very reason and set up a hospital for infirm dolls.

正是因为这个原因，贝思对这些布娃娃倍加珍爱，并且为病娃娃们建立起一所医院。

" Forty odd, " said Donal Noye. " The crippled and infirm, and some green boys still in training" .

" 四十多，" 唐纳·诺伊道，" 都是老弱病残，以及仍在受训的男孩。"

The first to pass away with be the old, infirm or very young.

最先去世的是年老、体弱或年幼的人。

The poor son spent his infirm infancy in infirmary.

这个可怜的孩子在医务室里度过了虚弱的幼年。

The rear was brought up by the wagons loaded with the sacks and the infirm.

后面是装满麻袋和体弱者的马车。

She had lived to be very old and at last infirm.

她活得很老，最后体弱多病。