The most ancient parts of the continental crust are 4000 million years old.
该大陆地壳最古老的那些部分有40亿年了。
Lowered sea levels exposed the shallow continental shelf beneath the Bering Sea.
下降了的海平面使白令海底的浅大陆架露了出来。
The quota system was modelled on those operated in America and continental Europe.
配额制是仿照美国和欧洲大陆所施行的那些制度制定出来的。