jīng / guò / jǐ / gè / yuè / de / diào / chá / tā / duì / dāng / dì / shì / chǎng / de / qíng / kuàng / yǐ / jīng / liǎo / rán / yú / xiōng

经过几个月的调查，他对当地市场的情况已经了然于胸。

After several months of research, he has a clear understanding of the local market.