undecorated

The undecorated walls made the room feel cold and empty.

用法提示：undecorated 是形容词，修饰walls，表示‘没有装饰的’。

She chose an undecorated cake for her grandmother, who prefers simple desserts.

用法提示：undecorated 作定语，说明蛋糕没有装饰。

The package arrived in an undecorated brown box.

用法提示：undecorated 作定语，修饰box，表示‘没有装饰的’。