push down
1.向下推
2.推下去,陷进去
3.按
例句：
They are trying to push the wall down.
他们试图把墙推倒.
I push the problem down into the dim recess of my mind.
我把这个问题藏到内心深处,不去多想它.
It only needed a push and the whole building will come tumble down.
只要稍稍一推,那整幢房子就会倒塌下来.
Push your hand down the hole to see if the rabbit is still there.
将手伸到洞里看兔子是否还在里面