hand guardhændɡɑ:d短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 扶手 Two other key issues were reducing the weapon's weight and increasing the heat resistance of the hand guard, which would start to melt after firing too many rounds. 另外两个关键问题是减轻枪械的重量和提高扶手的耐热能力，试射几轮以后扶手便开始融化。 blog.sina.com.cn