multiple insemination

例句：

1. 1. In some species, multiple insemination is a common reproductive strategy to increase the chances of successful offspring.
   在某些物种中，多次受精是一种常见的繁殖策略，以提高成功后代的机会。
2. 2. The researcher found that multiple insemination could lead to genetic diversity and improved fitness inoffspring.
   研究者发现，多次受精可以导致遗传多样性和提高后代的适应性。
3. 3. The couple decided to try multiple insemination as an alternative to IVF, hoping for a better chance of conceiving.
   这对夫妇决定尝试多次受精作为试管婴儿的替代方案，希望有更好的怀孕机会。