孩子我们以你在这个事业中表现出来的勇气和信念为荣，因为我们知道对你们来说持续到底有时是多么困难。
We honour you children for having the courage and belief in this cause for we know how difficult it has been at times for you to stay the course.
那么，火山引起的航班滞留到底还要持续多久呢？
So how long will the volcano continue to keep flights grounded?
因为这需要坚持到底的决心，药物治疗的要求非常苛刻，而且在大多数情况下，治疗将持续终身。
A lot of commitment is needed, since following a drug regime can be quite demanding and in most circumstances, the treatment will have to be taken for life.
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