The proof is easy, but the counterexamples are hard . 证明是容易的，但反例则甚难。
2.
Notwithstanding the above , lands department did not take further action . this was due to resource constraints and the priority in handling cases of breaches of lease conditions , and the fact that there were oil depot , power station , sewage treatment plant and other industrial uses , with few residential developments , in the vicinity of the plant 但当年地政总署鉴于资源上的限制和处理违反地契条款个案的优先次序，加上考虑到该厂当时邻近的建筑物有油库、电力厂、污水处理厂和其他工厂用途等，而民居则甚少，所以没有即时采取进一步的行动。
