4. The number of the medical workers of this hospital is reduced 4 times than before, while that of the out-patients has increased by 140 percent.

這個醫(yī)院的醫(yī)務人員數(shù)比過去減少了 3/4，而門診病人卻增加了 1.4倍。

(或：這個醫(yī)院的醫(yī)務人員數(shù)減少到了過去的1/4，而門診病人卻增加了140%）

5. The mortality of the disease is reduced five times after liberation.

解放后此病的死亡率減低到過去的1/5。

(或：解放后此病的死亡率降低了80%。）

6. By using this new process the loss of the materials was declined by a factor of 4.

采用這種新工藝使材料的損耗

(或：采用這種新工藝使材料的損耗降低到原來的1/4。)

7.  The incidence of the disease in young children has been lowered nearly fivefold over the last three decades.

幼兒患此病的發(fā)病率在過去30年中降低了將近80%。

（或：幼兒患此病的發(fā)病率在過去30年中降低到將近1/5。）

8. This can be achieved by reducing the length of the laser tube by a factor of ten.

把激光管長度縮短到1/10，就可做到這一點。

 (或：如要!放到’這」點奇將激光管長度縮短90D

9. Early studies indicated that the readmission rate of patients could be reduced 3 times if they are maintained on depot injection rather than oral medication.

早期研究表明：如用長效注射法而不是用口服藥物維持，則患者的再次住院率可降低2/3。

（或：早期研究表明：如用長效注射法而不是用口服藥物維持，則患者的再次住院率可降低到1/3。)