1, abbreviated (as long as it is a short idiom) 2, (1)A=X+Y+Z (2) genius = 1% inspiration +99% sweat (3) means through your own efforts. From his famous words, we can see that the first person is always there. The second man, who finished his work silently, showed his talent, so his molecules became bigger and bigger.

The more you know, the less you don't know.