Beijing and Tianjin的用法和樣例：
例句
- Because it is close to Beijing and Tianjin, the economy of the Huaihai area has developed fast.
由于緊靠京津地區，淮海地區經(jīng)濟發(fā)展迅速。 - Beijing will work closely with relevant provinces in the ecological improvement program for Beijing, Tianjin, and the surrounding area organized by the central goverment.
積極參與環(huán)京津地區防沙治沙工程和國家有關(guān)首都生態(tài)圈建設工作。
