In 2016 the defence ministries of the two countries conducted working-level exchanges.
2016年，两国防务部门进行了事务级交流。
2
Later working together in London, they laid the foundations of modern physics by showing that normal laws of cause and effect do not apply at the level of subatomic particles.
后来，他们在伦敦一起工作，证明了正常的因果法则并不适用于亚原子粒子，从而奠定了现代物理学的基础。
3
After three years of working in a petrol station and doing unpaid work I still hadn't managed to get an entry level job.