Nibs and John were first and second mate.
尼布斯和约翰是大副和二副。
All the students had their teeth X-rayed at the end of the first and second years.
所有的学生都在一年级和二年级结束时做了牙齿 X 光检查。
More than thirty centimeters of rain fell on May first and second.
VOA: special.2010.05.17
So in each set, the first and second plague are forewarned that's what the FW is on the side--whereas the third plague is not.
在每一组中,第一个和第二个瘟疫都是被预先警告,而第三个却没有。
So what we're going to do is consider the first and second laws.
我们需要考虑的是,热力学第一和第二定律。
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