Cetaceans reduce the number of breaths they take during rest periods.鲸类动物在休息时减少它们的呼吸次数.It is not clear whether cetaceans undergo dream sleep.鲸类动物是否经历梦睡眠还不清楚.Missing until recently were fossils clearly intermediate, or tr...
群众立即响起了一片充满蔑视和愤恨的吼声.The crowd mingled defiance and anguish in an animal roar.她愤恨的喊声中带有歇斯底里.There was hysteria in her cry of resentment.充满复仇心的人会寻找发泄愤恨的机会.A vindictive man will look for occasions for resentment....