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1·In places, the water table is declining at a rate of a meter a year, necessitating the periodic deepening of wells and the use of ever-more-powerful pumps.

在一些地方，水位正以每年一米的速度下降，需要定期加深井并使用更强大的水泵。

2·The filters become dirty after they are used for a long time necessitating replacement.

过滤器成为肮脏后，他们用相当长的时间需要更换。

3·Additionally, rising number of power plants is necessitating the need for pet coke for use as a fuel.

再加上发电厂数的增加，需要作为燃料的石油焦。

4·The conversion-per-pass is generally low, thus necessitating gas recycle to increase overall product yield.

其单程转化率一般是低的，因此有必要使气体循环以提高总的产品收率。

5·It described a simple session EJB method that updates both JDBC and JMS data, necessitating an XA transaction.

它描述了通过一个可以更新jdbc和JMS数据的简单会话ejb来实现xa事务。

6·The exigencies of my business necessitating my frequent absence abroad, I have accorded power of procuration to Mr.

本人因公常到海外出差，为应业务急需，特授权伍兹先生为代理。

7·The Sonics have alleged that they are losing money at KeyArena, thereby necessitating a likely move to Oklahoma City.

超音速队声称，他们在钥匙球馆有经济损失，因此搬家到俄克拉荷马城是必须的。

8·The health status of 435 consecutive patients with sleep disturbances necessitating polysomnography was investigated.

435个患有睡眠紊乱的病人进行多导睡眠描记法对其健康状况进行调查。

9·The exigencies of my business necessitating my frequent absence abroad, I have accorded power of procuration to Mr. H.

本人因公常到海外出差，为应业务急需，特授权近藤春雄先生为代理。

10·The AD7763 is ideal for applications demanding high SNR without necessitating design of complex front end signal processing.

AD7763是要求高信噪比（SNR）且无需要采用复杂的前端信号处理设计应用的理想器件。

迫使

1·The body tends to build up a tolerance to the medication, necessitating a more potent dosage in order to fall asleep; habitual use can lead to addiction.

人体会对药物产生耐药性，迫使自己长时间的服用可催眠的药物使自己入睡会对药物产生依赖性。

需要

1·In places, the water table is declining at a rate of a meter a year, necessitating the periodic deepening of wells and the use of ever-more-powerful pumps.

在一些地方，水位正以每年一米的速度下降，需要定期加深井并使用更强大的水泵。

2·We proceeded to make the world's most desultory small talk, interrupted by every new arrival, each one necessitating a fresh discussion about who was on and who wasn't.

我们接着进行了世界上最不连贯的闲聊，不停地被新进入的人打断，每一次都需要重新讨论谁加进来了而谁还没有。

3·The AD7763 is ideal for applications demanding high SNR without necessitating design of complex front end signal processing.

AD7763是要求高信噪比（SNR）且无需要采用复杂的前端信号处理设计应用的理想器件。