frailness

The frailness of the child from the birth made her susceptible to every prevailing illness.
这个孩子天生的虚弱，使她易于罹患每一种流行的疾病。
When one or more nodes fail, the downriver nodes can' t receive the packet, which makes the system frailness.
树中的节点失效后其下游的节点将不能接收到分组，使得系统变得脆弱。
The findings suggest that exercise early in life could help fend off frailness in the elderly.
据研究结果推测，年轻时多做运动，有助于防止年老体衰。