All year she has fluctuated between optimism and despair.全年当中她时而乐观,时而消沉.Her family had of late exceedingly fluctuated.她家里最近连起风波.His feelings fluctuated between excitement and fear.他的心情变化不定,有时激动,有时害怕....
The spatial distribution patterns of larvae and pupae are congregating distribution.幼虫和蛹的空间分布均为聚集分布.He says victims of violence are congregating there because they feel safer.他说暴力的受害者聚集在这里因为他们觉得更安全.For the binary matrix,...