His smile had no heart in it, but few eyes were near enough or sharp enough to detect that.

他的笑容里没有一丝一毫的感情，但很少有眼睛能近距离或敏锐地察觉到这一点。

youdao

The knife is not sharp enough and need grinding.

这刀不快，需要磨了。

youdao

Not that I was sharp enough to catch what was happening.

我现在对于发生了什么事情就比较精明了。

youdao

"This needle is still sharp enough to penetrate through body tissue.

VOA: special.2010.02.10

Critics complain that the enforcement efforts to date lack sharp enough teeth to discourage future abuses.

FORBES: Magazine Article

These edges are actually sharp enough to become uncomfortable with prolonged, firm gripping.

ENGADGET: HTC Desire X review: one last hurrah for a former flagship?

The writing is sharp enough that the humor doesn't need to be forced.

CNN: STORY HIGHLIGHTS