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1·And it is staggeringly hard to kill.

它是那样难以消灭，真是令人震惊。

2·Tumors are notoriously hard to kill.

肿瘤向来以难以清除而臭名昭著。

3·Big and hard to kill creature.

大和硬杀动物。

4·Old soldiers are hard to kill.

想杀我们这群老兵，可没那么容易。

5·That's why they're so hard to kill!

这正是它们为什么如此难以消灭的原因！

6·Though hope is frail, its hard to kill.

虽然希望是很脆弱的，但是是很难扼杀的。

7·Though hope is frail, it's hard to kill.

虽然希望渺茫，却难以扼杀。

8·Though hope is frail, it is hard to kill.

虽然希望是渺茫，也不要放弃。

9·Once approved, military projects are hard to kill.

而军事项目一旦得到通过，则很难再被撤销。

10·It is hard to kill this kind of epiphyte with ecumenic medicines.

消灭此类真菌，用一般的药物无法实现。