这把剪刀很锋利，使用时要小心。

These scissors are very ___sharp, so be careful when using them.

这位老师思维敏锐，总能立刻理解学生的困惑。

The teacher is very ___sharp and always understands students' confusion immediately.

股价今天出现了急剧下跌。

There was a ___sharp drop in stock prices today.

望远镜能提供清晰的月球表面图像。

The telescope provides ___sharp images of the moon's surface.

她的新发型看起来非常时髦。

Her new hairstyle looks really ___sharp.