• Why ? Look at Jim, his jacket is inside out

The water was quite shallow but where the reef ended, there was a sharp drop to the sandy ocean

• A sharp drop 陡直向下的坡

• Sharp 锐利的， 锋利的， 明显的， 强烈的， 刺耳的， 急剧的， 精明的， 敏捷的

• I think I need a sharp pencil

• She has got a sharp mind and a sharp tongue

• The photograph isn't quite sharp enough

• there is a sharp bend in the road

• Lemons have a sharp taste