The disadvantage is that reverse electrodialysis produces direct current, whereas the world runs mostly on alternating current.

不足处是反向电渗析产生的是直流电，而世界上主要使用交流电。

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It is a variable-to- variable-length code based on encoding lengths of runs of 0 s and 1 s, as well as alternating bits in test sequences.

采用变长到变长的编码方式对测试序列中连续的“0”和“1”以及交替变化位的长度进行编码。

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In his buildup program, Lydiard recommends alternating longer 90-minute to two-hour runs with 60-minute runs on other days, aiming for a total of 10 to 11 hours of weekly running.

在Lydiard的里程累积计画中，他建议用2小时长跑撘配隔天1小时的方式来取代90分钟的长跑，来达成10 ~ 11小时的周里程数。

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