n.
										 be (strictly) for the birds
										- 不重要;不实际
 to not be important or practical
 
 the bird has flown
										- 要抓的人逃掉了
 the wanted person has escaped
 
 a bird in the hand is worth two in the bush
										- 一鸟在手胜过双鸟在林(满足于现有的总比因过分追求而失去一切好)
 it is better to keep sth that you already have than to risk losing it by trying to get much more
 
 the birds and the bees
										- (尤指跟儿童讲的)性的基本知识
 the basic facts about sex, especially as told to children
 
 a bird's-eye view (of sth)
										- 鸟瞰;俯视
 a view of sth from a high position looking down
 
 birds of a feather (flock together)
										- 同类的人(聚在一起);物以类聚
 people of the same sort (are found together)
 
 give sb/get the bird
										- (被)喝倒彩
 to shout at sb as a sign of disapproval; to be shouted at
 
- 向某人竖起中指(表示侮辱);受到竖中指的侮辱
 to make a rude sign at sb with your middle finger; to have this sign made at you
 
 the early bird catches the worm
										- 捷足先登;捷足先得
 the person who takes the opportunity to do sth before other people will have an advantage over them
 
 kill two birds with one stone
										- 一石二鸟;一箭双雕;一举两得
 to achieve two things at the same time with one action
 
 a little bird told me
										- (不想说出是谁告诉的)有人告诉我的,不告诉你我是怎么知道的
 used to say that sb told you sth but you do not want to say who it was