launch an attack 发动攻击 例句与用法: The general conjectures that the enemy will launch an attack against us this night. 将军推测说敌人将于今天晚上突袭我们。 词形变化: 动词过去式: launched | 动词过去分词: launched | 动词现在分词: launching | 动词第三人称单数: launches |