Invalidates
v. 使無效( invalidate的第三人稱單數 ); 使作廢; 證明…錯誤; 使站不住腳
??? 情景例句
If you wish to enter you'll first need gh show return dicket.
如果你想進入的話，首先出示你的雙程票。
It's very warm.
天氣很暖和啊。
That's about the best we can do on that.
那差不多是我們所能開出的最低價了。