【4月29日】看軍聞學英語

■刀客

原文：

In early January, the Corps announced it plans to invest up to $10 million in polymer-cased .50 caliber ammo to test in the 'Ma Deuce' machine gun, a potent weapon used by both Army and Marine mounted combat units.

The Army's role in the Joint Lightweight Ammunition Integrated Product Team is to find a lightweight-cased replacement for brass-cased 7.62 mm, the caliber used in Army and Marine M240 machine guns and some sniper weapons. The ultimate goal is to replace brass-cased ammo for all 7.62mm ammo in the Army.

The Army is also evaluating lightweight-cased 6.8mm ammunition to replace the M4A1 carbine and M249 Squad Automatic Weapon with more potent weapons that significantly lighten ammunition weight.

中譯：

1月初，美軍陸戰隊宣布要投資高達1000萬美元，用M2機槍來測試.50口徑聚合物彈殼彈藥。這款俗稱「乾媽」的重型機槍，是陸軍及陸戰隊戰鬥騎兵單位所使用的火力強大武器。

陸軍在「聯合輕量彈藥整合製造小組」的角色，就是找出一款能夠取代7.62厘米黃銅彈殼的輕量彈殼。此一口徑適用於陸軍及陸戰隊M240機槍，與某些狙擊槍，終極目標就是要取代陸軍所有同等口徑的黃銅彈殼彈藥。

陸軍也正在評估一款6.8厘米輕量彈殼彈藥，期將M4A1卡賓槍及M249班用自動機槍，取代成彈藥配重夠輕，且火力強大的武器。

－關鍵軍語－

※mounted combat:

Tactical maneuver forces fighting while mounted in either ground combat vehicles or armed Army aircraft.

※caliber:

The internal diameter or bore of a gun barrel.

例句：

Does a higher caliber necessarily make a gun more powerful?

槍的口徑愈大，火力就必然愈強嗎？