One possibility is that lefty snails have difficulty mating with their right-handed relations.
One possibility is that lefty snails have difficulty mating with their right-handed relations.
有一种可能性是左撇子蜗牛难跟右撇子的同类交配。
One possibility is that lefty snails have difficulty mating with their right-handed relations.
有一种可能性是左撇子蜗牛难跟右撇子的同类交配。