幅度: width, extent, range, scope...
宝: jewel, gem, treasure, precious...
腐败: corruption, to corrupt, to rot, rotten...
塑料: plastics...
机动: locomotive, motorized, power-driven, adaptable, flexible (use, treatment, timing etc)...
提醒: to remind, to call attention to, to warn of...
暴风雨: rainstorm, storm, tempest...
听写: (of a pupil) to write down (in a dictation exercise), dictation, (music) to transcribe by ear...
密度: density, thickness...
各位: everybody, all (guests, colleagues etc), all of you...