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But in many countries eclipses have traditionally been seen as bad omens .

但在许多国家，日食传统上被视为噩兆。

Such eclipses occur when a new moon passes in front of the sun .

这样的日食发生新月在太阳前面经过的时候。

Lunar eclipses occur , on average , about every 6 months .

月食发生的频率平均是6个月一次。

It may be the year that china 's services sector officially eclipses industry .

它或许是中国服务业在官方统计中超过工业的第一年。

Although there are three more partial solar eclipses this year , for europeans in particular tuesday 's event was the key one .

尽管今年的日偏食多于三次，但是对于欧洲人而言，周二这次是绝佳的一次机会。