as a result of由于…的结果
例句：He was injured as a result of boiler explosion.
他因锅炉爆炸而受伤。
2. She says her university will not expand mainland recruitment largely this year due to limited housing facilities.
due to由于，因为
例句：Her absence is due to illness.
她因病缺席。
3. About 3 percent went back to the mainland to work.
go back回转, 回顾, 追溯
例句：Once his decision is made, there will be no going back.
他一旦做出决定, 就没法回头了。
4. Students from the mainland will no longer have to go through one year of prep course.
no longer不再, 已不, 不复, 再也不
例句：The city's water supply is no longer adequate for its need.
这个城市的供水已不敷需求。
go through经过，度过
例句：His relationship with Mary went through four stages.
他与玛丽的关系经历了四个阶段。
