We usually deal on a 20% trade discount basis with an additional quantity discount for orders over 1000 units.
我们通常给予20%的商业折扣,外加订货1000件以上的数量折扣。
For example, with their help China can send its TV and radio programmes to the other side of the world.
例如,在卫星的帮助下,中国能把自己的电视及广播节目传送到地球的另一边。