But relying on human are not only inefficient but also costly.

单靠人力不但效率低下，而且耗资巨大。

youdao

The traditional manual deicing is not only inefficient but also threatens to the safety of electrical workers.

人工除冰不仅效率低下，而且会威胁电力工人的生命安全。

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I believe that TV's appeal to the short attention span is not only inefficient communication but decivilizing as well.

我相信，电视迎合观众注意力跨度短的做法不仅不能很好进行交流，而且还会降低文化水平。

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The bureaucrats not only reformed China's monstrously inefficient state-owned enterprises, but also introduced some meritocracy to appointments.

ECONOMIST: China

And insurers cannot easily favour only the best hospitals, because politicians will not let inefficient hospitals go bust.

ECONOMIST: Health insurance: Clear diagnosis, uncertain remedy | The

Current smartphones that support LTE are not only pricier than their 3G counterparts but also bulkier and highly power-inefficient.

FORBES: Verizon Making Big LTE Push This Year