基础设施的开发，也受到巨大修复本钱的制约，由于我们缺乏维修能力，而且过往二十多年的内部冲突带来的恶意破坏，使得情况大大恶化。
The development of infrastructure is constrained by the high capital cost of restoration, brought about by the lack of maintenance and exacerbated by wanton destruction over two decades of conflict.
但是要把飞机卖给国外，中国商用飞机需要建立一个服务和维修的网络，由于缺乏熟练的员工导致这并非易事。
But to sell its aircraft abroad, CACC will have to create a service and maintenance network, which will not be easy because of a shortage of suitably skilled staff.
水坝和水库当然需要不断的维修和精心保养，但常常是由于缺乏必要的管理制度而导致这些水利设施没有得到必要的维护。
Dams and reservoirs certainly need constant repairs and careful maintenance and do not always get them, usually because the necessary institutions are not in place.
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