e down to sb,有某人负责；
go down with wth,患了什么病；
down and out,贫困潦倒的；被击倒不能再战的;
down in the mouth,垂头丧气；沮丧的;
down in the dumps,垂头丧气；情绪低落;
break down,分解；发生故障；失败；毁掉；制服;
settle down,定居；安定下来；专心于;
put down,镇压；记下；贬低；制止;
get down on,开始不喜欢;
get down to,开始认真考虑；着手处理;
cut down,削减；砍倒；杀死；删节；胜过;
cut down on,削减,减少;
cut down to,削减;
sit down,坐下；
turn down,调小；
go down,下降；平静下来；传下去；被接受；
ups and downs,盛衰,沉浮.
