1. It was a violent political upheaval. 这是一场激烈的政治动乱。
2. The mechanics of risk management are also in upheaval. 风险管理的过程亦在经历剧变。
3. And it is exacerbated by the return of millions of war refugees and by decades of upheaval that have left land tenure in chaos. 此外，几百万战时难民的返乡，以及数十年战乱带来的土地所有权的混乱，也都是问题恶化的主要原因。
英英解释
n.
1. a state of violent disturbance and disorder (as in politics or social conditions generally)
2. a violent disturbance
3. (geology) a rise of land to a higher elevation (as in the process of mountain building)
4. disturbance usually in protest
