effective firing range的用法和樣例：
例句
- At this range, the enemy is too far away for standard rounds to be effective.
這個(gè)距離遠遠超過(guò)了子彈的有效射程。 - Despite the good antitank defense here, the Chinese were unable to knock out a single tank because their artillerymen could not have been worse in their firing.
盡管東北軍盡心準備的反坦克塹壕成功地阻擋了蘇軍坦克的進(jìn)攻，但由于其炮兵的射擊準確度過(guò)差，沒(méi)有能把握住機會(huì )，在火炮有效射程內將蘇軍坦克擊毀。
