1.His hearing was impaired by the continuous great noise for a long period of time.

1.长时期巨大噪声使他听力受到了损害。

2.Method Hepatic and renal functions,and tissue biopsy were measured in rats with therapeutic,toxic and lethiferous dose treatment after a period of time.

2.分别测定治疗剂量、中毒剂量、致死剂量组小鼠在用药一段时后肝肾功能,并进行组织病理学检查。

3.A life insurance company contract that pays periodic income benefits for a specific period of time or over the course of the annuitant's lifetime.

3.在特定期定期定额支付款项。是指在约定时内，按年度支付相等金额款项。例如，保险公司每年年金、退休金等。

4.When the plants are under water for this length of time they have enough water availability for a long enough period of time to completely rehydrate.

4.当植物被泡到水里这么长时,他们就有足够水分来供应给空凤在未来很长段时氢氧化合反应.

5.A tax advantage is also available to holders of most depletive assets—those which are used up, or depleted, over a period of time—like oil, natural gas, uranium, or coal.

5.那些折耗性资有者也享有纳税优惠，如石油、天然气、铀或煤这类会在一定期里被耗竭资，被称为折耗性资。

6.Tree cutting organizations or private individuals shall, in accordance with the area, number of trees, tree species and period of time specified in the cutting license, finish the reforestation task; the area and number of trees in the reforestation shall not be smaller than those cut.

6.采伐林木单位或者个人，必须按照采伐许可证规定面积、株数、树种、期限完成更新造林任务，更新造林面积和株数不得少于采伐面积和株数。