A smile comes very easy you can wrinkle up with cheer, A hundred times before you can squeeze out a salty tear; It rippl来一个微笑很容易──嘴角欢快翘起来，你能百次微笑，可难得挤出一滴泪；它的涟漪深深波及心弦，总会留下反响，宛若拥抱。