To invent is to make something that had no previous existence, such as a machine or a method, through the use of the imagination or through experiment, or to makeupsth .
发明，指发明出某时期以前不存在的新东西或方法等，也可表示“虚构、编造”之意。
2
As a result of too exert oneself to do sth. on tiptoe, can make knee concerns because of tiptoe emphatic and too go up at leg abdomen forcibly, bring about turnip leg very easily.