painstaking in one's study grind away at one's studies
grind away at one's studies
悬梁自尽用英文怎么说
悬梯用英文怎么说
悬棺用英文怎么说
悬椅用英文怎么说
悬殊用英文怎么说
英语词典收录了最新的汉英词典和英汉词典,总共有200多万个词条,词库仍在不断更新中。