豪廷布艺
a sharp increase 陡然增长a significant increase 大幅度增长（意义重要的）substaintially increase 大幅度增长（意义重要的）remarkable increase 大幅度增长（意义非同寻常的）increase a great lot 大幅度增长 （量很大的）
shishan786
简单的表达如下： 1.增加50%，increase by 50 percent 减少50%,decrease by 50 percent. 2.增加到50%，increase to 50 percent 减少到50% decrease to 50 percent.一般来讲，“增加（或减少）多少”用介词by,“增加到（或减少到）多少”用介词to.
yechenchao77
An increase of 50%, reduced by 50%.增加50%，减少50% Increased to 50%, reduced to 50%.增加到50%，减少到50%
