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- The polar explorers took every precaution to minimize the dangers of their trip. 极地探险者十分小心谨慎，以便使旅途的危险性减少到最小。
- Polar explorers had to be extremely tough to endure the climate and other hardship. 极地的探险者必须要非常的吃苦耐劳,才能忍受气候和其他艰苦。
- The two systems of government are polar opposites. 这两种政体正好相反。
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- The explorers starved to death in the desert. 探险者们在沙漠中饿死了。
- The boys made believe that they were explorers. 孩子们装成探险家。
- The explorers were young and hearty. 这些探险者年轻而健壮。
- Are there any animals in the polar circles? 南极圈和北极圈内有动物存在吗？
- Explorers have to withstand hardships. 探险者得忍受艰苦。
- The explorers went deep into the jungle. 探险家们进入丛林深处。
- The explorers were faint from hunger and cold. 探险者们因饥寒交迫而委顿不堪。
- The jungle swallowed up the explorers. 探险人员消失在密林里了。
- Located or found in one of the Polar Regions. 环极的，围绕极地的位于或发现于一个极地区域中的
- Traders came in the wake of the explorers. 商人紧跟著探险者而至。
- The explorers rigged up a shed for the winter months. 探险家匆促搭建了一座冬用的小屋。
- In spite of vigilance a polar bear escape from the zoo. 尽管警戒很严，北极熊还是逃出了动物园。
- The lost explorers ate birds' eggs to stave off starvation. 为了避免饿死，那些迷路的勘探人员吃鸟蛋充饥。
- The explorers led a dangerous existence. 探险家过著危险的生活。
- The polar region is the habitat of the polar bear. 北极地带为北极熊的栖息地。
- Although they can swim, the polar bears are terrestrial animals. 北极熊虽然会游泳，但也是陆栖动物。
