然而，在老年学仍严重缺乏有专业训练需求的工人。
However, there is a serious shortage of workers with specialized training needed in gerontology.
因此它不能够为最新的第四代战斗机驾驶员实现训练需求。
Therefore it cannot fulfil the training requirements for the pilots of the latest fourth-generation fighters.
与之前的12万学员不同，这群人没有明显的水中求生训练需求。
Unlike the 120,000 students who had gone before them, this group had no overt need for aquatic-survival training.
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