“突发的”用英语怎么说

他在催眠曲的安抚下平静下来，但任何突发的巨响又会让他大发脾气。He is calmed by a lullaby, but maddened by any sudden loud noise.一场突发的悲剧在人们心头笼罩上一层阴影.A sudden , dramatic tragedy cast an overhanging pall of gloom.夜间突发的噪声,其最大值不准超过标准值15分贝.The maximal limita...