Thus, some animals have been seen stimulating their own sex organs when alone, or mounting partners of their own sex, or trying to copulate with members of other species (including man).
英
美
- 因而，人們發(fā)現一些動(dòng)物獨處的時(shí)候卻正在刺激它們自己的性器官，或者正騎跨在屬于它們自己性別的夥伴背上，或者正設法與其他動(dòng)物物種（包括人類(lèi)）的個(gè)體發(fā)生交尾行為。
