360. The outbreak of the Second World War was quickly followed by an increase in the number of day nurseries in almost all countries, as women were again called upon to replace men in the factories.
隨著二戰(zhàn)的爆發(fā)，婦女們又被召去工廠以填補(bǔ)男性勞動力的缺失，緊接著幾乎所有國家的日托數(shù)量都有所增長。

六級詞匯講解:
本句的主干是The outbreak...was...followed by...，向as…是原因狀語。call upon=call on意為“號召，要求”。可構(gòu)成以下搭配：call upon sb. to do sth.（號召某人做某事）、call upon sth.（要求某事）。replace意為“取代，代替”，一般多采用被動態(tài)，即sb./sth. be replaced by...。

英語六級考點(diǎn)歸納:
關(guān)于call的短語除了call upon之外，常見的還有：

call for意為“尋求，需要”。如：
More work does not necessarily call for more men.
增加工作不一定需要增添人員。

call up意為“打電話；使想起”。如：
It called me up those days when l was young.
這些讓我想起了年輕時的日子。

call forth意為“引進(jìn)，喚起；振作起”。如：
His inspiring speech has called forth admiration from all the people presented.
他那鼓舞人心的講話引起了所有在場人的贊賞。