London was a frequent starting point for Grand Tourists, and Paris a compulsory destination; many traveled to the Netherlands, some to Switzerland and Germany, and a very few adventurers to Spain, Greece, or Turkey.

出自-2017年6月阅读原文

It made a compulsory part of college education.

出自-2017年6月阅读原文

compulsory cooperation between universities and industries

出自-2011年12月阅读原文

London was a frequent starting point for Grand Tourists, and Paris a compulsory destination; many traveled to the Netherlands,some to Switzerland and Germany, and a very few adventurers to Spain, Greece, or Turkey.

2017年6月六级真题（第二套）阅读 Section C

New compulsory age-appropriate relationship and sex education lessons in England should help equip children to deal with the growing demands of social media.

2018年高考英语江苏卷 阅读理解 阅读D 原文

To increase levels of community service, some schools have launched compulsory volunteer programs.

2015年高考英语江苏卷 阅读理解 阅读C 原文

It seems clear that such a scheme is an initiative push toward what would eventually be a compulsory Internet "driver's license" mentality.

2011年考研真题（英语二）完形填空 Section Ⅰ