rounded

Compared meaning: curved in shape, with no sharp corners (adjective).

比较义项：形状带有弧度、没有尖角的（形容词）。

• oval

  Refers to a specific elongated egg-like or elliptical shape; it names the whole outline of an object, not just its corners or edges.

  指一种特定的长圆形，像鸡蛋或椭圆；它形容的是整个物体的外形轮廓，而不只是边角。

  The picture frame on her desk is oval, not the usual rectangle.

  她桌上的相框是椭圆形的，不是常见的长方形。

• rounded 本词

  Means curved with no sharp corners; it is usually applied to the edges or corners of an object rather than naming the object's overall shape.

  指弯曲、没有尖角；通常用来形容物体的边角，而不是描述整个物体的形状。

  The knife has a rounded tip so it's safer for kids to use.

  这把刀的刀尖是圆钝的，孩子用起来更安全。

Oval and rounded both describe curved shapes without sharp corners. Oval names a specific elongated, egg-like shape, describing the whole outline of something. Rounded means curved with no sharp corners, usually describing the edges or corners of an object rather than its overall shape.

这两个词都可以形容不带尖角的曲线形状，但侧重不同：oval 特指像鸡蛋或压扁的圆一样的长圆形整体轮廓，而 rounded 只表示曲线、没有棱角，常用来形容边角而不是整体形状，语气更笼统。