嗜吃福將
“本月我的成绩较上个月下降了百分之二十”"This month I was down twenty percent from the previous month" “本月我的成绩较上个月下降了百分之二十”"This month I was down twenty percent from the previous month"
加勒B海盗
速度降低了20% the speed has been reduced by 20%速度降低到20% the speed has been reduced to 20%