1·I know it must be terrible to grow old and infirm and to lose your intellect, but I want my mother to know she is valuable because she is loved, not because she is useful.
变老，体弱，思维迟钝，我知道这一切很糟糕，但我想让我的母亲明白她的价值在于她被爱，而不是她有用。
2·Those who huddled pitifully together on the left were the old, the infirm, the ill, the very young.
那些可怜地挤在左边的人都是些老、弱、病、幼者。
3·Some examples of people who might be granted an absentee ballot are those serving in the armed forces the infirm the elderly and citizens living overseas.
可以行使不在籍投票权利的例子如：正在服兵役的人、生病体弱的人、年迈的人和旅居国外的公民。
4·We should support for the aged and infirm.
我们应该援助年老的人和体弱的人。
5·We discussed the stability of both radial movement and axis movement of charged particle in infirm focusing magnetic field and obtained the term of stability.
我们探讨了弱聚焦磁场中带电粒子轴向和径向运动的稳定性问题，得到稳定性条件。
1·You can have as many paper-remedies you like in Britain - try exercising them if you are poor, unemployed, old, sick or infirm!
如果你愿意你可以再英国纸上谈兵，试图实施它们如果你贫困，失业，年老，疾病或体弱！