You know the proverb, Smile and the world smiles with you, cry and you cry alone.
要知道有句格言“微笑,世界与你同欢乐;哭泣,你只能独自悲伤”。
By 1820 the population of New York had grown to about 125,000, making it the largest city in the USA.
到1820年,纽约市的人口增长到12。5万人左右,使它成了当时美国最大的城市。