河冰结合,非一日之寒;积土成山,非斯须之作。
解释:河水成冰,不是一日的寒冷所致;积土成为高山,不是须臾的工夫就能完成。
化工行业有能力改变社会,但前提是我们在进步的同时承担责任。
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.