发生: 1.happen; occur; take place; arise; crop up; chance; befall; come off; come to pass; come about; come up; come what may; be set; turn up; bring to pass:2.germination; occurrence3.-gony; -p
形成: form; take shape; shape; formation; production; morph-; morpho-; plasto-; -plasia; -fy 短语和例子良好习惯的形成 the formation of good habits; 性格的形成 the formation of character; 云是悬在空气中的水滴形成的。 clouds ar
