infirm相关的词根或词缀是: firm

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Care for the elderly and infirm .

对年老体弱者的照顾。

Support for the aged and infirm .

援助年老的人和体弱的人。

For he healed the sick and the infirm .

因为他医治生病和软弱的人.

Infirm , feeble , and often senile .

蹒跚的虚弱的，衰弱的，因老而糊涂的。

Peter is so infirm of purpose that it is useless to ask him for advice .

彼得这人优柔寡断，向他征求意见是徒劳无用的。