自修课；自修室

study hall───自修课；自修室

study hard───努力学习

city halls───市政厅

duty calls───使命召唤（游戏名，DutyCalls）；任务在身；职责所在

spur galls───刺瘿

stud farms───种马场

study rooms───书房；自习室；教室

study tours───考察团

town halls───市政厅；市政府；市民集会所

in the hit teen film "the Breakfast Club," students would sit for hours in study halls doing this: nothing.───在年轻人当中比较流行的电影《早餐俱乐部》所描述的那样，学生会数小时地坐在自习室里，无所事事。

Hundreds of karst halls have been revealed through engineering construction, cave development for tourism and speleological study, from which a great deal of information have been accumulated.───通过大量的工程实践、旅游洞穴的开发和洞穴的调查研究，揭露了数以百计的岩溶大厅，因而积累了岩溶大厅赋存的众多信息。

Universities are enrolling more and more students, resulting in crowded campuses, full libraries and self-study classrooms, and dining halls as jammed as farmers markets.───大学扩招导致校园拥挤，图书馆和自习教室座无虚席，食堂挤得像农贸市场。

High-quality higher education now requires electronic modernity in classrooms, dorms, libraries, science laboratories, study halls.───现在，高质量的高等教育要求教室、学生宿舍、图书馆、科学实验室、学习厅等都具备现代化的电子设施。

Dedicated to the demolition or transformed into study halls, they lost their solemnity of yesterday.───它们失去了往日的庄严和肃穆，或是被拆除，或是被改成纪念堂。

About 90 regular education students volunteer each semester to give up study halls and, instead, help Options students in their classes.───每一学期，有大约90名普通班的学生放弃自己的自学时间，帮助班上的残疾同学。

The school maintains unsupervised study halls during free periods.

About 90 regular education students volunteer each semester to give up study halls and, instead, help Options students in their classes.