certain quarter的用法和樣例：
例句
- 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.
主人對代理熟悉並確信其實力之後，他可以任命後者為某一地區的獨家代理。 - Twenty years before, there had been a movement among the peasants of the district to emigrate to certain supposedly warm rivers.
二十年前在這一地區的農民中間曾經發生過向著某某溫暖的河流遷徙的運動，這就是這些潛流的表現之一。
