前方道路有一个急转弯，请减速。

The road has a sharp ___curve ahead, so slow down.

看看这张显示人口增长的图表上的陡峭曲线。

Look at the steep ___curve on this graph showing population growth.

画家巧妙地捕捉到了模特肩膀的微妙曲线。

The artist beautifully captured the subtle ___curve of the model's shoulder.