Once the principal is familiar with an agent and is conviced of the agent's strength,he may appoint the latter as the exclusive agent for a certain area. 主人对代理熟悉并确信其实力之后，他可以任命后者为某一地区的独家代理。
Twenty years before, there had been a movement among the peasants of the district to emigrate to certain supposedly warm rivers. 二十年前在这一地区的农民中间曾经发生过向着某某温暖的河流迁徙的运动，这就是这些潜流的表现之一。
