1. 每架飞机起飞之前必须经过严格的检查。(check out)
Each and every plan must be checked out strictly before taking off.
2. 居民坚决反对在附近建立垃圾焚烧厂，因为他们担心工厂排放的气体会污染周围的空气。(waste incineration plant, concerned about)
The residents were firmly against the construction of a waste incineration plants in their neighborhood, because they were concerned about the plant's missions which may pollute the surrounding air.
3. 在这个地区，生态工程的投资额高达数10亿元。(mount to)
In this area, investments in ecological projects mount up to billions of yuan.
4. 干枯的河道里布满了大大小小的石块。(strewn with)
The dry riverbed is strewn with rocks of all sizes.
Although war caused great losses to this country, the local cultural traditions did not perish.
In order to build modern high-rises, many ancient buildings with ethnic cultural features were demolished.
In the earthquake, the main structures of most poor-quality houses disintegrated.
He made greatest efforts to achieve his goals, but still, his wonderful dreams vanished into the air at last.