手机发出的非电离辐射很弱，不足以断开化学键或破坏DNA。
The nonionizing radiation given off by cellphones is too weak to break chemical bonds or damage DNA.
该内存集将在数据库处于非激活状态时释放(如果数据库先前是处于激活状态)或者最后一个连接被断开的时候释放。
It is freed when database is deactivated (if it was activated) or the last connection disconnects.
Flash内存(可以通过几种不同的技术实现)是一种非挥发性内存，这意味着断开电源之后其内容仍然保持下来。
Flash memory, which can come in several different technologies, is non-volatile memory, which means that its contents persist after its source of power is removed.
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