是DEC。英文缩写词:DEC英文单词:Decrease缩写词中文简要解释:减少扩展资料Population growth is decreasing by 1.4 % each year人口增长率正在以每年1.4%的速度下降。Bank base rates have fallen from 10 per cent to 6 per cent — a decrease of 40 per cent.银行的基本利率已从10%降到了6%,降幅高达40%。