我猜在卡萨布兰卡一定有很多破碎的心，你知道我从未置身其中，所以不得而知。《卡萨布兰卡》。
I guess there are many broken hearts in Casablanca. You know I've never really been there. so I don't know.
Windows8尚处于开发阶段，所以该操作系统在平板电脑上如何工作还不得而知。
Windows 8 is still in development, so it's unclear how well the system will run on tablets.
有些商品之所以摆在那儿显然有它的理由，像压瘪的罐头或边角压碎的盒子之类；另外一些就不得而知了。
Some of the items are there for obvious reasons, like dented cans or corner-crushed boxes; others are a mystery.
但是ICInsights评论说，AMD是少数几家第二季度会比第一季度更差的公司之一，所以下个季度它能否留在前10还不得而知。
But IC Insights noted that AMD is among the few IC makers that expects second quarter sales to be worse than the first quarter and questioned whether it could remain in the top 10.
这个研究着重于猫天生是失聪的，所以对于退化的听觉是否会产生同样的神经转移我们不得而知。
The study focused on cats that were born deaf, so it is unclear if those with degenerative hearing would experience the same neurological shift.
这个研究着重于猫天生是失聪的，所以对于退化的听觉是否会产生同样的神经转移我们不得而知。
The study focused on cats that were born deaf, so it is unclear if those with degenerative hearing would experience the same neurological shift.
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