Cannot find window class.

找不到窗口类别。

youdao

While only older IRA owners benefit from this provision, potentially anyone can at some time find a window of opportunity to convert.

FORBES: Conversion Time

With rain pouring down, the Yankees and Cleveland Indians waited an hour Wednesday night to see if they could find a window to play a game.

WSJ: Reporter's Notebook

Can you find your window?

WSJ: Hal Holbrook Remembers a Road Show Wreck | Traveler's Tale