The doctor advised her to use a bidet for cleanliness during special times.

bidet 是名词，源自法语，指一种低矮的坐浴盆或洗浴设备，通常安装在马桶旁边，用于清洗下身。bidet 特别适合女性在经期等特殊时期使用，有助于保持个人卫生。