These crystal lattices may have imperfections, such as dislocations and vacancies.这些晶格可能有不完善之处, 例如位错和空穴.The process of development produced dislocations that strained political stability.发展的过程引起了脱节现象,破坏了政治稳定.The boundari...
He replied with characteristic insouciance: "So what?"他以一贯的漫不经心回答道:“那又怎样?”She hid her worries behind an air of insouciance.她掩饰着自己的烦恼,表现得无忧无虑。He replied with characteristic insouciance: 'So what?'他以一贯的漫不经心回答道:“那...