The language is perpetually in flux: it is a living stream, shifting, changing, receiving new strength from a thousand tributaries, losing old forms in the backwaters of time.
语言一直都在变化：那是条流动的溪水，不停地在转换、变换，接受千条支流的新生力量，丢弃旧形式。
Under such optimum operating conditions, the changing situation of membrane flux, oil content and COD with time is studied.
在此合理的操作条件下研究了膜通量、含油量、COD随时间的变化情况。
The main problem to calculate the emf within a rotating coil is to find out the magnetic flux which is changing with time.
计算旋转着的线圈中的电动势的主要问题是求出线圈中随时间而变化的磁通量。
The main problem to calculate the emf within a rotating coil is to find out the magnetic flux which is changing with time.
计算旋转着的线圈中的电动势的主要问题是求出线圈中随时间而变化的磁通量。
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