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Many other basic questions about ice also remain unanswered .

而关于冰层的许多其他问题也依旧难以解答。

Several awkward questions are left unanswered by this study .

有几个难以解决的疑问，这项研究是回答不了的。

The key question remains unanswered : who funded it ?

但是关键问题依然没有答案：谁给了它钱？

This new evidence leaves economists with lots of unanswered questions .

新证据给经济学家们带来了很多悬而未决的问题。

Calls to a spokesman for the chinese basketball association went unanswered friday .

记者周五打给中国篮球协会发言人的电话无人接听。