敲门砖的英文：
a brick picked up to knock on the door and thrown away when it has served its purpose; a stepping-stone to success
Idleness is the key of beggary, and the root of all evil.
懒惰是行乞的敲门砖，是万恶的根源。
n. 砖；大好人
v. 用砖砌（铺或围堵）
adj. 用砖做的；似砖的
They spanned windows with bricks.
他们在窗子上用砖砌了拱顶。
These buildings are made of adobe brick.
这些建筑都是由风干的砖坯砌成。
That brick really hit hard.
那个重击篮框的球真的撞得很有力。
adj. 精选的；摘下的
v. pick的过去式和过去分词；采摘
To pick or try to pick pockets.
扒窃或企图扒窃
Something,such as an ice pick,a toothpick,or a picklock,that is used for picking.
尖头挖掘工具用来挖掘的工具，如碎冰器、牙签或撬锁工具。
pick shirt to pieces
把衬衣撕开
n. 爆震声；敲；敲打
v. 敲；打；击；批评；撞；（心）怦怦跳
Who is knocking the door || Who is knocking || Who is at the door || Who is knocking at the door?
谁在敲门
Who is knocking the door / Who is knocking / Who is at the door / Who is knocking at the door?
谁在敲门
Please knock double knocks at the door before entering.
请先敲两下门再进来。