What remains unknown is what individual Xenicibis were fighting and why.

尚未已知的是哪类单独的始祖鸟具有攻击性，并且攻击的原因是什么。

youdao

What remains unknown, says Tapert, is if the cognitive downward slide in teenage binge drinkers is reversible.

目前尚不清楚的是，泰普特说，酗酒青少年的认知能力下降这壹症状是否有恢复的可能。

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And if that growing blackness represents knowledge, then as it grows, so does the awareness of what remains unknown.

如果那个正在增大的黑色部分代表你的知识的话，在知识增长的同时，你会意识到自己有许多不知道的东西。

youdao

But what remains unknown is why some people have longer telomeres than others.

ECONOMIST: Ageing

What remains unknown, and likely won't be answered until the BOG meeting, is if the revised valuation and the backup offer will sway votes.

NPR: AP Source: Hansen Adds Backup Offer To Kings Sale

What detail remains unknown after the trailer is who exactly the new hero will be of the game.

FORBES: Rockstar Debuts Grand Theft Auto 5 Trailer