The Flip, in particular, suffered from thin margins and -- though it was popular -- a highly uncertain future as the built-in video functionality of smartphones kept improving.

尽管Flip颇受欢迎，但其利润微薄，且前景不够乐观，因为智能手机的内置视频功能在不断提高。

youdao

I feel very uncertain, as though I'm wandering in the dark and don't know where it's safe to step.

我心里很不踏实，就好像在黑暗中行走，不知道哪里才是安全的地方。

youdao

Though the exact date of its foundation remains uncertain, there exists evidence of teaching there as early as 1096.

虽然人们还不确定牛津大学建校的确切日期，但是有证据表明早在1096 '年牛津就有教学活动了。

youdao

Some scientists though are uncertain as to whether the world can afford such large sums in a time of economic crisis.

BBC: Science & Environment

How much higher is uncertain, though, for none of these achievements can be regarded as secure.

ECONOMIST: He believes in government, so why doesn��t America?

After an uncertain start to the concert - one band member recalled the assembled aristocrats inspected them through eyeglasses "as though there were bugs on us" - the king roared his approval, loudly applauding their rendition of Tiger Rag.

BBC: Palace hits right note with fans