力不能支 meaning in English

unable to stand the strain any longer; too weak to stay on one's feet

The young man overwhelmed by the weight of his anguish , fell heavily on his knees before the bed , which his fingers grasped with convulsive energy . d avrigny , unable to bear the sight of this touching emotion , turned away ; and villefort , without seeking any further explanation , and attracted towards him by the irresistible magnetism which draws us towards those who have loved the people for whom we mourn , extended his hand towards the young man
那年轻人手指痉挛着，忽然力不能支似地跪倒在床前，阿夫里尼不忍再看这令人悲痛的情景，转过身去维尔福也不忍心再要求他解释，他好象被一股不可抗拒的力量吸引着，走到年轻人身边向他伸出一只手，因为凡是爱我们所哀悼的人，总是有这股磁力的。