今天就是今天

that is to say───就是；即；换言之

day by day───一天天；逐日

that is that───就是这样

to this day───至今

to call it a day───今天到此为止

clear as day───极明显；一清二楚

day in court───出庭日

But yesterday has come and gone, tomorrow or in the future, only today is today, is the real!───但昨天的已成过去，明天的还是将来，只有今天才是今天，才是实际的！

is the date today? Today is December 20th.───今天是几号？今天是十二月二十日。

Today is the fourteenth day of the ninth lunar month, today is my birthday.───今天是农历九月的第十四天，也是我生日。