Gas bubbles coalesce to grow as they rise.气泡在上升中聚集成长.Cities, if unrestricted, tend to coalesce into bigger and bigger conurbations...如果不加限制，城市往往会联合发展成越来越大的集合城市。Cities, if unrestricted, tend to coalesce into bigger and bi...
Cities, if unrestricted, tend to coalesce into bigger and bigger conurbations.如果不加限制，城市往往会联合发展成越来越大的集合城市。Gas bubbles coalesce to grow as they rise.气泡在上升中聚集成长.Particles do not coalesce with other particles.颗粒之间互不聚合....
一群鸟儿已经齐声唱起了欢快的晨曲。A flock of birds was already warbling a cheerful morning chorus.“是的，”他们齐声说。"Yes," they said together.“嗨，”他们齐声招呼道。"Hi," they chorused....