Each sperm looks like a rolled-up ball of twine and is transferred to a female as a large mass that slowly loosens he said .
每个精子看起来就像有很多线团缠在一起的一个球,被运送到雌性生殖道时是一个巨大的团,之后慢慢舒展开。
If the weapon missed the hunter 's prey , he could pull it back by the twine and quickly try again .
如果武器未能击中猎物,猎人一拉绳子就可将武器收回,然后再迅速抛出。
Sites such as digg , reddit , mixx , slashdot , delicious , stumbleupon , twine , and many others , show that collective intelligence may be the most powerful way to help individuals and groups filter content and manage their attention more productively .