IS the parenthetical figure following DH, DA or MDA which, when added to the touchdown zone, runway end, or threshold elevation, will give the DH, DA or MDA in feet above mean sea level.

决断高度或最低下降高度后括号中的数值。它与接地区、跑道顶端、或跑道头标高相加后即是决断高度（DA，DH）或最低下降高度（MDA）高于平均海平面英尺数。

youdao

Flacco threw red-zone touchdown passes in the first half -- the first to Anquan Boldin and another to Dennis Pitta.

CNN: Ravens fly high, win Super Bowl

If he wants to hobble into the end zone after a touchdown like a Pop Warner coach Mr. Ryan later explained the limp by saying he'd taken a "header" days before it's tough to argue the bottom line.

WSJ: New York Jets Back Up Their Talk

The NFL has tested them in their end zone pylons to capture touchdown replays.

FORBES: The Mad Billionaire Behind GoPro: The World's Hottest Camera Company