以下为句子列表：
英文: 1 Normal activity level for age andd circumstances. The child is neither more active nor less active than a normal child of the same age in a similar situation.
中文: 正常活动量，和年龄、情境相仿。和同龄孩子处于同样情境相比，不表现过多或过少的活动量。
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英文: It is shown that the radioactivity level of tin polymetallic ore, undressed ore and adjacent formation is affected by the strata and mineralization type, the radioactivity level of sulfide ore is not high as a whole, while that of tin ore generally is sev
中文: 锡多金属矿原矿及围岩放射性水平受地层与矿化类型影响很大，硫化矿整体放射性水平不高，砂锡矿却普遍高出背景值数倍，尾矿、炉渣放射性水平也相对较高，对环境的影响不容忽视。
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