They have been participated in 3 of the last world congresses on Civic Education.中国也派团参加了三次关于公民教育的国际研讨会.The mayor has tried to foster civic pride by having a new public library built in the city.市长试图在城市里建造一座新的图书馆以此来培养市民的...
Paleontologists know chert as a good place to look for fossils.古生物学者知道黑矽石同样的好地方去观看化石.The fossils appear to be an early form of seaweed washed up on a beach.这些化石看上去是被海水冲上岸的一种早期的水藻。The geologist found many uncovered fossil...