您要查找的是不是：
- It is obligatory upon us to protect the world from nuclear war. 保护世界免於核子战争是我们的义务。
- Be not a visit to Mr. George obligatory? 是不是必须我拜访乔治先生？
- Attendance at school is obligatory. 上学是强制性的。
- She subscribes to an animal protection society. 她捐款给一个动物保护协会。
- We subscribe to an animal protection society. 我们定期捐款给一个动物保护基金会。
- The young in our society need careand protection. 我们社会的年轻人需要受到关怀和爱护。
- I think it is obligatory on you to protect your family. 我认为您有义务保护您的家人。
- He was paying out half his profits as protection. 他把所得利润的一半交给歹徒作为保护费。
- They lobbied on the environmental protection issue. 他们就环境保护问题在议员中进行了游说。
- Is this business trip obligatory? 这次出差是不是规定的？
- A thin jacket is a poor protection against cold. 一件单薄的夹克衫不足以御寒。
- I think compulsory education is obligatory. 我认为义务教育制是必须履行的。
- The settlers banded together for protection. 移民联合起来保护自己。
- He's devoted his whole life to the protection of the rare animals. 他终生献身于珍稀动物的保护。
- Be it obligatory on us to help the poor? 我们有义务帮助穷人吗?
- A thin coat gives little protection against the cold. 一件薄上衣没有什么御寒作用。
- Is it obligatory on us to help the poor? 我们有义务帮助穷人吗?
- Attendance at primary school is obligatory. 上小学是义务的。
- The press conferences were almost obligatory. 这些新闻会议是不得已的。
- It is obligatory for us to obey the laws. 我们必须守法。
