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What the mercurial mr kim offers leads nowhere .

活泼善变的金正恩所承诺不一定会有什么结果。

It is hard , when it comes to this mercurial president , to disentangle conviction from opportunism .

一旦涉及这位善变的总统，就很难把坚定的信仰从投机主义中分离出来。

She has been a steady and successful finance minister , no mean feat with a boss as mercurial as nicolas sarkozy .

作为财政部长，她在法国多届内阁中职位稳定、成绩斐然，跟着尼古拉萨科齐这样善变的老板，这也着实不易了。

Despite his relative youth , the 78-year-old police chief is said to suffer from severe diabetes , wobbly knees and a famously mercurial temperament .

尽管他相对年轻，但据说这位78岁的警察局长患有严重的糖尿病，双膝颤抖，性情非常善变。

One is a hard-working pragmatist , the other a mercurial idealist .

一个是不辞辛劳的实用主义者，另一个是反复无常的自由主义者。