n.学习，研究；课题；书房；结论vi.考虑；沉思；默想；努力vt.想出；详细地检查；背诵（台词等）；为…费心思 变形： 复数：studies过去式：studied过去分词：studied现在分词：studying第三人称单数：studies 双语释义：v.(动词)vt. & vi. 学; 学习; 研究 make efforts to acquire knowledge; work; learnn.(名词)[U] 学习,学业,读书 an act of studying one or more subject