空气污染能否得到控制仍有待观察,而现状则远不足够让人为之振奋。
While it remains to be seen whether air pollution can be controlled, the status quo is far from encouraging.
天气状况是如何通过影响气流来提高编队飞行的效率的,这点仍有待观察。
It remains to be seen how weather conditions affect the air flows that make formation flight more efficient.
他是否能打破这个循环仍有待观察。
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