If you want to keep them for an indefinite period, store them in your freezer with a label - GALL STONES.
如果你想保留长一点时间，就加上标签放在冰箱里。
The factors which make for the formation of gall stones are apparently periodic rather than continuous in their mode of action.
显然，胆石形成因素的作用方式呈周期性，而不是持续性。
Methods Clinical data of 247 patients with incarcerated gall stones undergoing laparoscopic cholecystectomy in 2002-2007 were retrospectively analyzed.
方法回顾分析2002年- 2007年247例急性结石嵌顿性胆囊炎患者行腹腔镜手术的临床资料。
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