true airspeed under standard condition

例句：

1. 1. The truth is that she's not as good at math as we thought.
   事实是，她并不像我们想象的那样擅长数学。
2. 2. He told the truth about his experience in the war.
   他诚实地描述了他在战争中的经历。
3. 3. She always tells the truth to her friends.
   她总是对她的朋友说实话。