走进山西电力交易大厅，记者看到屏幕上实时显示火电出力量、风光发电量等数据。
New methods such as mini 3D ‘organoids’ are slowly phasing out animal testing in some areas of research. Plus, how to spot a fraudulent paper and the surprising science of squeaky sneakers.
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当然，成为志愿者也有门槛：需要经过背景检查、健康筛查和导向培训，每周至少承诺4小时的轮班，确保服务的稳定性。他们不碰任何直接医疗护理，却用细微的行动，填补了医疗服务的“温度缺口”。