在这个环境下，提高医疗保健和儿童教育是一个艰巨任务。
In that context, improving health care and education for children becomes a difficult task to solve.
难熔金属和贵金属组合的这一层薄膜使刻蚀成为一个艰巨任务。
The combination of refractory and noble metals in a single layer makes etching a formidable task.
在两种有矛盾倾向的情况中间达到平衡并不寻常。这是个艰巨任务。
So striking a balance between two apparently contradictory situations is to be achieved. That is the challenge.
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