煤矿中天然存有高爆气体。Highly explosive gas is naturally found in coal mines.许多人到煤矿来,是因为契约规定必须服务几年.Many people came to the coal mineindentured for several years.煤矿工人须在地下工作.Coal miners have to work under the ground....
Fontbonne is a liberal arts college, located in a residential suburb of St. Louis.芳邦大学是一所文科大学，位于圣路易斯市郊的居民区。The President, trying to be cute, said his liberal arts education had not really prepared him for such complicate...