n. 减小, 降低( decrease的名词复数 ); 减少（量）

v. （使）缩短, 减小, 减少( decrease的第三人称单数 )

n a change downward

n a process of becoming smaller or shorter

n the amount by which something decreases

n the act of decreasing or reducing something

v decrease in size, extent, or range

v make smaller