The university result has stages, and the third or fourth semester is the demarcation point.

大学成绩具有阶段性，第三或者第四学期为分界点。

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We did our metal work practice in the last month of the fourth semester for a whole month in our school's factory.

《金工实习》在第四个学期的最后一个月，我们在学校工厂里进行了为期一个月的金工实习。

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Proposal work should begin at the beginning of the fourth semester, and end no later than mid-term of the fifth semester.

开题工作应在第四学期初开始，最迟应在第五学期中结束。

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Eduardo Sanovicz, president of the Brazilian Airlines Association told the daily that the outlook for the third and fourth semester were also negative.

FORBES: In Brazil, Never Buy Anything That Flies