My sister who was in a private cell (room) had asked the nurse for a pail of soapy water and a mop, because she did find it quite dirty - and it probably was.

姐姐住在单人病房，她向护士要桶肥皂水和一个拖把，因为她发现病房实在是很脏——或许是很脏。

youdao

Purpose and methods: Single cell gel electrophoresis (SCGE), sister chromatid exchanges (SCE), chromosome aberrations are three methods to determine DNA damage and repair.

目的与方法：单细胞凝胶电泳技术(SCGE)、姐妹染色单体交换法(SCE)和染色体畸变分析法均能被用来检测dna的损伤或修复。

youdao

Prior to cell division it replicates, and the sister centrioles move to opposite ends of the cell to lie within the spindle - organizing structure, the centrosome.

它在细胞分裂之前复制，其中一个中心粒移向细胞的另一端，组织纺锤体和中心体。

youdao

When she didn't come home that night, her worried sister called her cell phone.

NPR: Woman In Timbuktu Punished For Forbidden Love

Yet even women like Sister Juana, who kept a library in her cell and whose heavy-browed stare still challenges the world to explain itself, were subject to male spiritual advisers.

ECONOMIST: The secret life of nuns

Indian security sources told CNN sister network CNN-IBN on Thursday that a Bangladeshi national bought cell phone SIM cards for the attackers at several locations inside India.

CNN: Two suspected of ties to Mumbai attackers' cell phones