渔民们知道一年中允许捕捞的大概时间段，但是在某些日子，一个地区可能有一个或多个实地生物学家中止捕鱼活动。
The fishermen know the approximate time of year when they will be allowed to fish, but on any given day, one or more field biologists in a particular area can put a halt to fishing.
中国微生物学家余勇向我们展示了这座宽敞的建筑，空荡荡的桌子，上面有带着插图的时间轴，详细介绍了自20世纪80年代以来中国南极行动的快速增长。
Yong Yu, a Chinese microbiologist, showed off the spacious building, with empty desks under an illustrated timeline detailing the rapid growth of China's Antarctic operations since the 1980s.
中国微生物学家余勇向我们展示了这座宽敞的建筑，里面的课桌空空如也。他在一张配有插图的时间轴上详细描述了中国南极探险活动自上世纪80年代以来的快速增长。
Yong Yu, a Chinese microbiologist, showed off the spacious building, with empty desks under an illustrated timeline detailing the rapid growth of Chinas Antarctic operations since the 1980s.
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