The requirement for work permits violates the spirit of the 1950 treaty.

对工作许可证的要求违反了1950年条约的宗旨。

Other European countries laid down a similar requirement for immigrants, and some terms are even tougher.

其他欧洲国家对移民也有类似的要求，有些条款甚至更加苛刻。

Scientific and accurate analysis and calculation on the requirement for traction force is necessary when the impact compactor is working.

冲击式压路机在工作时，对牵引力的要求进行科学准确的分析计算十分必要。

What is the minimum entrance requirement for this course?

这个学程的基本入学条件是什么？

The requirement for laughter is another person.

笑的必要条件是有另一个人存在。