Advancing suburban assurance is the difficulty and keystone of domestic insurance enterprise.发展农村保险是我国保险业发展的难点和重点.Quantitative measurements of one sort or another serve as the keystone of engineering practice.定量测定一种或多种成分...
Across the busy plaza, vendors sell hot dogs and croissant sandwiches.在热闹广场的另一边，摊贩叫卖着热狗和羊角三明治。Vendors displayed their wares in baskets or on the ground.小贩们把他们的商品摆放在篮子里或地上。Vendors were doing a brisk trade in souvenirs.商贩们...