The particles may enter the water at the source, during treatment and distribution, or, in the case of bottled water, from its packaging.

这些颗粒可能在处理和分配过程中从源头进入水，或者对于瓶装水，从包装中进入水。

In theory, even if the rest of the tumor shrinks beyond detection during treatment, a single residual cancer stem cell could seed the growth of a new tumor.

从理论上讲， 即使肿瘤的其余部分在治疗过程中缩小到无法检测到，单个残留的癌症干细胞也可以播种新肿瘤的生长。

When the thumb came out of my mouth, the cigarette went in, she said. What irked her more than endless tabloid speculation about her demise was gaining 60 lbs. during treatment.

“我不吃手的时候就开始吸烟了，”她说。比小报上没完没了的关于她死亡的猜测更让她恼火的是，治疗期间她的体重增加了60磅。

The anesthesiology resident, who held my hand during the awake portions of my surgery, radiation therapist that play my playlist during treatment and administrative staff that makes me smile every time I walk into the hospital.

那位在我手术中意识清醒时握着我手的麻醉科住院医生、在治疗期间播放我的歌单的放射治疗技师，以及每次走进医院时都令我喜笑颜开的行政人员。

That is why the University of North Carolina at Chapel Hill is leading a new clinical study to test the effectiveness of a couple-based intervention in which patients are paired up during treatment to act as a supportive community.

这就是为什么北卡罗来纳大学教堂山分校正在领导一项新的临床研究，以测试基于夫妻的干预措施的有效性，在该干预措施中，患者在治疗期间结对，以充当支持性社区。