大的流星尾巴可被肉眼看见，但最经常出现的是那些亮度相当于15等星以上的小尾：这些小尾成了雷达探测的目标。

The larger trails can be seen with the naked eye, but even the smaller meteors down to 15th magnitude, which are more common, the left trails that provide radar targets.

youdao

它们靠卷尾在海草或珊瑚上来固定自身，用细长的吻部吸入浮游生物和漂游的小甲虫类。

They anchor themselves with their prehensile tails to sea grasses and corals, using their elongated snouts to suck in plankton and small crustaceans that drift by.

youdao

他马上向天际望去，看到大群的小物体正在降落，尾部冒着烟划出一道尾迹。

Then he looked to the horizon and saw a swarm of small objects descending, trailing tails of smoke from behind, and he knew.

youdao

And when I do this test, what I want to do, is say I'm going to pick the middle spot, and depending on the test, if I know it's in the upper half, I'm going to set my start at the mid point and the end stays the same, if it's in the front half I'm going to keep the front the same and I'm going to change the endpoint.

如果我知道目标数可能，再比中值点大的区间里，我可能就会把开始点设为中值点,而尾点不变，如果在小的那个区间里,就保持开始点不变而把尾点设为中值点，你们可以看到这儿的代码,就是这么做的,对不对？它是怎么做的？

麻省理工公开课 - 计算机科学及编程导论课程节选